7
8
9
10
11
12
13
a) (5x+4)(x2−3x+2)=
=5x(x2−3x+2)+4(x2−3x+2)=
=5x3−15x2+10x+4x2−12x+8=
=5x3−11x2−2x+8
b) (8−2y)(3y3+4y2−y)=
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