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schoolboyqnumber1
@schoolboyqnumber1
September 2021
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Как делать?
Распишите максимально подробно ,пожалуйста. 245, 247,248
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miron2077
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!!!!!!!!!!!!!!!!!!!!!!
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darknokia
( 245 ) -60a+6(a+5)²= -60a+6(a²+10a+25)= -60a+6a²+60a+150=6a²+150
(247) 32a+2(a-8)²=32a+2(a²-16a+64)=32a+2a²-32a+64=2a²+64
(248) (3x-8y)²+6x(9x+8y)=(9x²-24xy-24xy+64y²)+54x²+48xy=9x²-48xy+64y²+54x²+48xy=63x²+64y²
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Verified answer
!!!!!!!!!!!!!!!!!!!!!!(247) 32a+2(a-8)²=32a+2(a²-16a+64)=32a+2a²-32a+64=2a²+64
(248) (3x-8y)²+6x(9x+8y)=(9x²-24xy-24xy+64y²)+54x²+48xy=9x²-48xy+64y²+54x²+48xy=63x²+64y²