Question

factorise x²+x - 42​

Answer 1

Answer:

${x}^{2} + x - 42$

$x {}^{2} - 7x + 6x - 42$

$x(x - 7) + 6(x - 7)$

$(x + 6)(x - 7)$

these are the factors for the given expression

Answer 2

${x}^{2} + x - 42 \\ \\ {x}^{2} - 7x + 6x - 72 \\ \\ x(x - 7) + 6(x - 7) \\ \\ ( x+ 6)(x - 7) \\ \\ x = - 6 \: and \: x = 7$