Question

Factorise:x^2+x-56..plzzz​

Answer 1

Answer:

$(x - 7)(x + 8)$

Step-by-step explanation:

${x}^{2} + x - 56 \\ \\ = {x}^{2} + 8x - 7x - 56 \\ \\ = x(x + 8) - 7(x + 8) \\ \\ = (x - 7)(x + 8)$

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Answer 2

Answer:

the two no are 8,-7

x^2+8x-(-7x)-56

x(x+8)-7(x+8)

so (x+8),(x-7)

then x=-8

x=7

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