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x² - 3x – 88 =0
x² - 11x + 8x – 88 = 0
x(x – 11) + 8(x – 11) = 0
(x – 11)(x + 8) = 0
So, x – 11 = 0 or x + 8 = 0
Hence, x = 11 or x = -8