Question

x square + 9x +20factorisation ​

Answer 1

Answer:

$= {x}^{2} + 9x + 20 \\ = {x}^{2} + 4x + 5x + 20 \\ = x(x + 4) + 5(x + 4) \\ = (x + 4)(x + 5).$

Answer 2

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