completing the square. 2x²+x-4 =0
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first divide the whole term by coefficient of x2
2x^2÷ 2 + x/2 - 4/2
x^2 + x/2 = 2
add (x/2 + 1/2)^2 to both sides
x^2 + x/2 + ........now u can do itt
2x^2÷ 2 + x/2 - 4/2
x^2 + x/2 = 2
add (x/2 + 1/2)^2 to both sides
x^2 + x/2 + ........now u can do itt
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