X square + X - 20 equal to zero
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Here we can find the value of x by using the splitting method.
x² + 5x - 4x - 20 = 0
x(x + 5) - 4(x + 5) = 0
(x + 5) (x - 4) = 0
x = - 5 or x = 4
The value of x is - 5 or 4.
Hope this helps you.