factorise— (x²-1)² + 8x (x² + 1) + 19x²
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Answer:
(x²-1²)²+8x(x²+1)+19x²
=[x⁴-2x²+1]+8x³+8x+19x²
=x⁴-2x²+1+8x³+8x+19x²
=x⁴+8x³+17x²+8x+1
THANK YOU
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