I gimnazjum

Policzmy to razem 1

P=a⋅x a) P=a⋅(x+1)=ax+a Pole zwiększy się o a   b) P=a⋅(x−4)=ax−4a Pole zmniejszy się o 4a   c) P=a⋅3x=3ax Pole zwiększy się trzykrotnie   d) P=a⋅21​x=21​ax Pole zmniejszy się dwukrotnie

Rozwiązanie 1

a) x=1      12+4⋅1+4<svg xmlns="http://www.w3.org/2000/svg" width='400em' height='1.28em' viewBox='0 0 400000 1296' preserveAspectRatio='xMinYMin slice'><path d='M263,681c0.7,0,18,39.7,52,119
c34,79.3,68.167,158.7,102.5,238c34.3,79.3,51.8,119.3,52.5,120
c340,-704.7,510.7,-1060.3,512,-1067
l0 -0
c4.7,-7.3,11,-11,19,-11
H40000v40H1012.3
s-271.3,567,-271.3,567c-38.7,80.7,-84,175,-136,283c-52,108,-89.167,185.3,-111.5,232
c-22.3,46.7,-33.8,70.3,-34.5,71c-4.7,4.7,-12.3,7,-23,7s-12,-1,-12,-1
s-109,-253,-109,-253c-72.7,-168,-109.3,-252,-110,-252c-10.7,8,-22,16.7,-34,26
c-22,17.3,-33.3,26,-34,26s-26,-26,-26,-26s76,-59,76,-59s76,-60,76,-60z
M1001 80h400000v40h-400000z'/></svg>​=1+4+4<svg xmlns="http://www.w3.org/2000/svg" width='400em' height='1.08em' viewBox='0 0 400000 1080' preserveAspectRatio='xMinYMin slice'><path d='M95,702
c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5,-10,-9.5,-14
c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54
c44.2,-33.3,65.8,-50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10
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c5.3,-9.3,12,-14,20,-14
H400000v40H845.2724
s-225.272,467,-225.272,467s-235,486,-235,486c-2.7,4.7,-9,7,-19,7
c-6,0,-10,-1,-12,-3s-194,-422,-194,-422s-65,47,-65,47z
M834 80h400000v40h-400000z'/></svg>​=9<svg xmlns="http://www.w3.org/2000/svg" width='400em' height='1.08em' viewBox='0 0 400000 1080' preserveAspectRatio='xMinYMin slice'><path d='M95,702
c-2.7,0,-7.17,-2.7,-13.5,-8c-5.8,-5.3,-9.5,-10,-9.5,-14
c0,-2,0.3,-3.3,1,-4c1.3,-2.7,23.83,-20.7,67.5,-54
c44.2,-33.3,65.8,-50.3,66.5,-51c1.3,-1.3,3,-2,5,-2c4.7,0,8.7,3.3,12,10
s173,378,173,378c0.7,0,35.3,-71,104,-213c68.7,-142,137.5,-285,206.5,-429
c69,-144,104.5,-217.7,106.5,-221
l0 -0
c5.3,-9.3,12,-14,20,-14
H400000v40H845.2724
s-225.272,467,-225.272,467s-235,486,-235,486c-2.7,4.7,-9,7,-19,7
c-6,0,-10,-1,-12,-3s-194,-422,-194,-422s-65,47,-65,47z
M834 80h400000v40h-400000z'/></svg>​=3=1+2        x=2

A. −9⋅5−4⋅2+45=   −45−8+45=−8=10

a) −3+48​=18​=8&gt;0

a)     <table style="border: none; border-collapse: collapse; width: 624px;"> <tbody> <tr style="height: 0px;"> <td style="vertical-align: top; padding: 7px 7px 7px 7px; border: solid #000000 1px;"> x </td> <td style="vertical-align: top; padding: 7px 7px 7px 7px; border: solid #000000 1px;"> −3   </td> <td style="vertical-align: top; padding: 7px 7px 7px 7px; border: solid #000000 1px;"> −2   </td> <td style="vertical-align: top; padding: 7px 7px 7px 7px; border: solid #000000 1px;"> −1   </td> <td style="vertical-align: top; padding: 7px 7px 7px 7px; border: solid #000000 1px;"> 0   </td> <td style="vertical-align: top; padding: 7px 7px 7px 7px; border: solid #000000 1px;"> 1   </td> <td style="vertical-align: top; padding: 7px 7px 7px 7px; border: solid #000000 1px;"> 2   </td> <td style="vertical-align: top; padding: 7px 7px 7px 7px; border: solid #000000 1px;"> 3   </td> </tr> <tr style="height: 0px;"> <td style="vertical-align: top; padding: 7px 7px 7px 7px; border: solid #000000 1px;"> −3x+10   </td> <td style="vertical-align: top; padding: 7px 7px 7px 7px; border: solid #000000 1px;"> −3⋅(−3)+10=   =9+10=19   </td> <td style="vertical-align: top; padding: 7px 7px 7px 7px; border: solid #000000 1px;"> −3⋅(−2)+10=   =6+10=16   </td> <td style="vertical-align: top; padding: 7px 7px 7px 7px; border: solid #000000 1px;"> −3⋅(−1)+10=   =3+10=13   </td> <td style="vertical-align: top; padding: 7px 7px 7px 7px; border: solid #000000 1px;"> −3⋅0+10=   =0+10=10   </td> <td style="vertical-align: top; padding: 7px 7px 7px 7px; border: solid #000000 1px;"> −3⋅1+10=   =−3+10=7   </td> <td style="vertical-align: top; padding: 7px 7px 7px 7px; border: solid #000000 1px;"> −3⋅2+10=   =−6+10=4   </td> <td style="vertical-align: top; padding: 7px 7px 7px 7px; border: solid #000000 1px;"> −3⋅3+10=   =−9+10=1   </td> </tr> </tbody> </table>

Najwygodniejszy sposób nauki z edukacyjnym Odrabiamy AI

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