1.

X²+15x+54=0 solve the following quadratic equation by factorisation​

Answer» ER:

X = -6 & -9

Steps

{x}^{2} + 15x + 54 = 0 \\ {x}^{2} + 9x + 6x + 54 = 0 \\ x(x + 9) + 6(x + 9) = 0 \\ (x + 6)(x +9) = 0

x = - 6

and

x = - 9


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