Answer:
2x³+2x²-7
Step-by-step explanation:
2x(x²+2)-(x+2)²-3(1-x²)
2x³+4x-(x²+4x+4)-3+3x²
2x³+4x-x²-4x-4-3+3x²
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2x^3 + 2x^2 - 7
Answer:
2x³+2x²-7
Step-by-step explanation:
2x(x²+2)-(x+2)²-3(1-x²)
2x³+4x-(x²+4x+4)-3+3x²
2x³+4x-x²-4x-4-3+3x²