Решите примеры: (3a-2)(3a+2)+(a-8)(a+8)=? (5x-3y(5x+3y)+(3x-5y)(3x+5y)

Question

Решите примеры:
(3a-2)(3a+2)+(a-8)(a+8)=?

(5x-3y(5x+3y)+(3x-5y)(3x+5y)

Answer 1

(3a-2)(3a+2)+(a-8)(a+8)=9a²-4-a²-64=10a²-68.
(5x-3y)(5x+3y)+(3x-5y)(3x+5y)=20x²-9y²+9x²-25y²=34x²-34y².

Comments

спс