Question

factorise— (x²-1)² + 8x (x² + 1) + 19x²​

Answer 1

Answer:

Factorise:4(x2+1)2 +13 (x2+1)-12 rovekrismit0h rovekrismit0h 22.09.2016 Math Secondary School answered Factorise:4(x2+1)2 +13 (x2+1)-12 2 See answers ARoy ARoy 4(x²+1)²+13(x²+1)-12 =4(x⁴+2x²+1)+13x²+13-12 =4x⁴+8x²+4+13x²+1 =4x⁴+21x²+5 =4x⁴+20x²+x²+5 =4x²(x²+5)+1(x²+5) =(x²+5)(4x²+1) geniusitta geniusitta 4(x2+1)2 +13 (x2+1)-12 =4(x^4+2x^2+1)+13x^2+13-12 …

Step-by-step explanation:

Answer 2

Expand the square

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\left(x^{2}-1\right)^{2}+8x(x^{2}+1)+19x^{2}

(x2−1)2+8x(x2+1)+19x2

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