Question

(b) Find the value of x. Show all your working and give your answer correct to 2 decimal places.

Answer 1

Answer:

On comapring given quadratic equation with ax

2

+bx+c=0 we get,

a=2,b=7 and c=−5

Now by using quadratic formula,

x

x

x

=

2×3

−7±

7

2

−4×3×−5

=

6

−7±

49+60

=

6

−7±

109

=

6

−7+

109

and x=

6

−7−

109

=0.57 and x=−2.91

So, the solutions of the given quadratic equation are 0.57 and −2.91.