(ii) 2x2+x-4-0 – InterviewSolution

1.

(ii) 2x2+x-4-0

Answer»

2x2+ x -4=02x2+ x = 4x2+ x/2 + 1/4 = 2+1/4(x + 1/2)2= 9/4

(x + 1/2) = ± 3/2

x = 3/2 - 1/2 = 1

orx = 3/2 + 1/2 = 2

Hence, x = 1 or 2.

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