Question

Wykonaj mnożenie: a) (x7-x6)(x5-x2) b)(x12-1)(x3+x4) c)(x7-x6-1)(x5+x3) d)(x4-x3-x2)(x5+1)

Answer 1

a) (x7-x6)(x5-x2)=35x²-14x²-30x²+12x²=3x²

b)(x12-1)(x3+x4)=36x²+48x²-3x-4x=84x²-7x

c)(x7-x6-1)(x5+x3)=(x-1)8x=8x²-8x

d)(x4-x3-x2)(x5+1)=-x(5x+1)=-5x²-x

Answer 2

a)

35x^2-14x^2-30x^2+12x^2=3x^2

b)

36x^2+48x^2-3x-4x=84X^2-7x

c)

35x^2+21x^2-30x^2-18x^2-5x-3x=8x^2-8x

d)

4x-3x-2x=-1x