Question

2 X square + X - 4 is equal to zero

Answer 1

It may be helps you...!!

Answer 2

Hi ,

Given quadratic equation is

2x² + x - 4 = 0

Divide each term with 2 , we get

=> x² + x/2 - 4/2 = 0

=> x² + x/2 = 2

=> x² + 2 × x × 1/4 = 2

=> x²+2 × x × 1/4 + ( 1/4 )² = 2 + (1/4)²

=> ( x + 1/4 )² = 2 + 1/16

=> ( x + 1/4 )² = ( 32 + 1 )/16

=> ( x + 1/4 )² = 33/16

=> ( x + 1/4 ) = ± √33/4

x = -1/4 ± ( √33 )/4

Therefore ,

x = ( -1 ± √33 )/4

I hope this helps you.

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