Question

solve the following equation for x and give your answer correct to 3 significant figures:

$2 {x}^{2} - 4x - 3 = 0$
(hint: by Sridhar Acharya method)

Answer 1

2x^2-4x=3
2x(x-2)=3
x(x-2)=3/2
x(x-2)=1.5
x^2-2x=1.5
x^2-x=1.5/2
x^2=7.5