Question

factorise it
above question​

Answer 1

Answer:

$(x {}^{2} + 2x + 2)(x {}^{2} - 2x + 2) \\ = x {}^{2}(x {}^{2} - 2x + 2) + 2x(x {}^{2} - 2x + 2) + 2(x {}^{2} - 2x + 2) \\ = x {}^{4} - 2x {}^{3} + 2x {}^{2} + 2x {}^{3} - 4x {}^{2} + 4x + 2x {}^{2} - 4x + 4 \\ = x {}^{4} + 4$

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