Ответ:
7(x+8)+(x+8)(x-8)=7x+56+(x²-8x+8x-64)=7x+56+x²-64=x²+7x-8
(x-3)(3+x)+(x-3)²=3x+x²-9-3x+(x²-6x+9)=x²-9+x²-6x+9=-6x
(y-5)²-(y+7)2=y²-10y+25-(2y+14)=10y+25-2y-14=8y+11
(x+3)(x-3)-x²+2x=x²-3x+3x-9-x²+2x=2x-9
Copyright © 2024 SCHOLAR.TIPS - All rights reserved.
Answers & Comments
Ответ:
7(x+8)+(x+8)(x-8)=7x+56+(x²-8x+8x-64)=7x+56+x²-64=x²+7x-8
(x-3)(3+x)+(x-3)²=3x+x²-9-3x+(x²-6x+9)=x²-9+x²-6x+9=-6x
(y-5)²-(y+7)2=y²-10y+25-(2y+14)=10y+25-2y-14=8y+11
(x+3)(x-3)-x²+2x=x²-3x+3x-9-x²+2x=2x-9