I gimnazjum

Policzmy to razem 1

a) X+Y= &nbsp; (6a−2c2+10)+(9−3a+c2)= &nbsp;    =6a−2c2+10+9−3a+c2=

a) p2−[−3p2+p−(−p−7)+3]−2,5p2= &nbsp;&nbsp;    =p2−[−3p2+p+p+7+3]−2,5p2= &nbsp;&nbsp;    =p2−[−3p2+2p+10]−2,5p2=

a) 6(7x−5y+1)= &nbsp; 42x−30y+6 &nbsp; b) 8(−3x−2y−1)= &nbsp; −24x−16y−8

a) 5x(11x2−3xy+5)= &nbsp; 55x3−15x2y+25x &nbsp; b) 0,2k(10m2−km+6)= &nbsp; 2km2−0,2k2m+1,2k

a) (24x2y−40xy2+60):(−4)= &nbsp;&nbsp; −6x2y+10xy2−15 &nbsp; b) (88k2m2n−44km2n+33kmn2):22= &nbsp;    =2288​k2m2n−2244​km2n+2233​kmn2=

a) 5(x+2y)−6(x−3y)+7(3x+y)= &nbsp;    =5x+10y−6x+18y+21x+7y= &nbsp; 20x+35y &nbsp; b) (x2+x−1)⋅4+16(x−x2)−5(8−x+2x2)=