Question

Find the roots of x²-x-20 = 0​

Answer 1

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Answer 2

Answer:

x² - x - 20 = 0

x² -5x + 4x - 20 = 0 { Middle term splitting }

x(x-5) + 4(x-5) = 0

(x-5)(x+4) = 0

x - 5 = 0 and x + 4 = 0

x = 5 and x = -4

Hence, 5 and -4 are the roots of the given equation.

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