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).
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).
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Answers & Comments
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).