Question

Find the root of equation underroot (2x^2+9)=9

Answer 1

Answer:

Step-by-step explanation:

√2x² + 9 = 9

Squaring both the sides,

2x²+9=81

2x²+9-81=0

2x²-72=0

x²-36=0

(x)²-(6)² =0

(x+6)(x-6)=0

So, x=6 and x= -6