-(x+2)²+16(x-1)²

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-(x+2)²+16(x-1)²
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-(x+2)²+16(x-1)²
-(x+2)²+16(x-1)²

-(x+2)²+16(x-1)²
=(4(X-1)+(X+2))*(4(X-1)-(X+2))=(5X-2)*(3X-6)