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Solve the quadratic equation by factorisation method x2+x-20=0 |
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Answer» ong>Answer: x²+ x - 20 = 0 x² + 5X - 4x - 20 = 0 x ( x + 5 ) - 4 ( x +5 ) = 0 ( x + 5 ) ( x - 4 ) = 0 => x +5 = 0 & x - 4 = 0 <= => x = - 5 & x = 4 <= ===> hope it helps you <=== |
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