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If y=(x+3) 2 then (-2x -6) 2 must equal

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Hananegussieid


y(x+3)2 then (-2x-6)2

is you have to distribute 2 like

2x+6=-4x-12

-2x        -2x

6=-2x-12

 +12     +12

-2x=0

x=0