Question

x⁴+x²+1 factorise
$(a + b) {?}^{2}$
​

Answer 1

${x}^{4} + 2 {x}^{2} + 1 \\ = ({x}^{2} ) {}^{2} + 2( {x}^{2} )(1) + {(1)}^{2} \\ = {( {x}^{2} + 1) }^{2}$

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