Question

factorise x(square)+ x- 20​

Answer 1

Answer:

$x {}^{2} + x - 20$

$x {}^{2} - (5 - 4)x - 20$

$x {}^{2} - 5x + 4x - 20$

$x(x - 5) + 4(x - 5)$

$(x - 5)(x + 4)$

Answer 2

Step-by-step explanation:

$\huge\bold\red{Solution..}$

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

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