2a(x+1)²-2ax²

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2a(x+1)²-2ax²
2a(x+1)²-2ax²

2a(x+1)²-2ax²
2a(x+1)²-2ax²
=2a(x^2+2x+1)-2ax^2
=2ax^2+4ax+2a-2ax^2
=4ax+2a
=2a(2x+1)