Question 278697
4xsquare + 11x = 20 
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4x^2 + 11x - 20 = 0
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4x^2 + 16x - 5x - 20 = 0
4x(x+4)-5(x+4) = 0
(x+4)(4x-5) = 0
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x = -4 or x = 5/4
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Cheers,
Stan H.