Question

Выполните умножение:
a) (b-2)(b+2)(b²+4);
б) (3-y)(3+y) (9+g');
в) (a2+1)(a+1)(a-1);
г) (c*+1)(c+1)(e-1);
д) (x-3)(x+3)²,
e) (g+4g-4)
ж) (4-5)(5+a)
з) (c+4)(4-c).​

Answer 1

a) (b-2)(b+2)(b²+4) = (b²-4)(b²+4) = b^4 - 16.

б) (3-y)(3+y) (9+g') = (9 - y²)(9 + g').

в) (a^2+1)(a+1)(a-1) = (a^3 - a^2 + a - 1).

г) (c*+1)(c+1)(e-1) = (c^2 + c)(e - 1).

д) (x-3)(x+3)² = (x-3)(x+3)(x+3) = (x+3)^2(x-3).

е) (g+4g-4) = 5g - 4.

ж) (4-5)(5+a) = -(a+1).

з) (c+4)(4-c) = -(c-4)(c+4) = -(c^2 - 16).