Question

factorise the following
X square + 2 X - 63​

Answer 1

Answer:

${x}^{2} + 2x - 63 = 0 \\ = {x}^{2} + 9x - 7x - 63 = 0 \\ = x(x + 9) - 7(x + 9) = 0 \\ = (x + 9)(x - 7) = 0 \\ x = - 9 \: \: and \: \: 7$

Hey! Mate Here is your solution. Thanks

Answer 2

Step-by-step explanation:

${x}^{2} + (9 - 7)x - 63 = 0 \\ {x}^{2} + 9x - 7x - 63 = 0 \\ {x}(x + 9) - 7(x + 9) = 0 \\ (x + 9)(x - 7) = 0 \\ if \: (x + 9) = 0 \: \: x = - 9 \\ if \: (x - 7) = 0 \: \: x = 7$

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