4x² + x - 5 =0
by quadrant formula
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Step-by-step explanation:
4x^2+x-5=0
or, 4x^2-4x+5x-5=0
or, 4x(x-1) +5(x-1) =0
or, (4x+5)(x-1) =0
or x= 1 or (-5/4)
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