Question

Срочно!!! 50 баллов
Упростите выражение:
(-7a-2b)(4a+8b)+(-8a-8b)(-3a+7b)
-7x^2(5x-3)(-7x^2-4)
(8m-3)(3n-2)+(-8m-8)(-n-5)
(-8x-8y)(-x-5)-(3x+5y)(6x+5)
Выполните умножение:
(-2a-4b)(-2a+8b)

Answer 1

(-7a-2b)(4a+8b)+(-8a-8b)(-3a+7b)
-28a²-56ab-8ab-16b²+24a²+56ab+24ab+56b²
-4a²+16ab+40b²

-7x²(5x-3)(-7x²-4)
(-35x³+21x²)(-7x²-4)
245x⁵+140x³-147x⁴-84x²
245x⁵-147x⁴+140x³-84x²

(8m-3)(3n-2)+(-8m-8)(-n-5)
24mn-16m-9n+6+8mn+40m+8n+40
32mn+24m-n+46

(-8x-8y)(-x-5)-(3x+5y)(6x+5)
8x²+40x+8xy+40y-(18x²+15x+30xy+25y)
8x²+40x+8xy+40y-18x²-15x-30xy-25y
-10x²+25x-22xy+15y

(-2a-4b)(-2a+8b)
4a²-16ab+8ab-32b²
4a²-8ab-32b²