Question

zero of the polynomial 2x²+7x-4 is​

Answer 1

2x^2 + 7x - 4 = 0

2x^2 + 8x - x - 4 = 0

2x ( x + 4 ) - ( x + 4 ) = 0

(2x - 1 ) ( x + 4 ) = 0

(2x - 1 ) = 0 or ( x - 4 )

x = 1/2

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