Question

2x2 + x - 4= 0 by complete square method ​

Answer 1

Answer:

$2 \times 2 + x - 4 = 0 \\ = 4 + x - 4 = 0 \\ = 4 + x = 4 \\ = x = 4 - 4 = 0$

As per BODMAS (Bracket of devision multiplication addition subtraction