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How i can do this step by step If y= (x+3)^2, then (-2x-6)^2
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How i can do this step by step 
If y= (x+3)^2, then (-2x-6)^2

User David Lazar
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(-2x-6)^2=(-2(x+3))^2=(-2)^2\cdot(x+3)^2=4(x+3)^2=4y
User Jahaad
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