solve quadratic equation using factorise x2 + 11x - 80 = 0
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hey mate here is ur answer
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Shreya1001:
that is -16 not -6
please edit
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x^2 - 16x - 5x + 80
(x^2 - 16x) - (5x + 80)
x(x - 16) - 5 (x - 16)
(x + 5) (x - 16)
so values of x are
x = -5 , 16
(x^2 - 16x) - (5x + 80)
x(x - 16) - 5 (x - 16)
(x + 5) (x - 16)
so values of x are
x = -5 , 16
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