Question

factorise x^2-3x-54​

Answer 1

Answer:

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Answer 2

Solution:-

${x}^{2} - 3x - 54$

$= {x}^{2} - (9 - 6)x - 54$

$= {x}^{2} - 9x + 6x - 54$

$= x(x - 9) + 6(x - 9)$

$= (x + 6)(x - 9)$

Therefore, Either (x + 6) = 0 or, (x - 9) = 0

• x + 6 = 0

=> x = - 6

• x - 9 = 0

=> x = 9

Therefore, x = -6 or 9