Question

find the roots of the equation√
$2x2 + 9 = 9$
​

Answer 1

Answer:

+-6

Step-by-step explanation:

Squaring both sides

2x^2 +9=81

2x^2 =72

x^2 =36

x=+-6

Make my answer as brainlist please

Answer 2

Answer:

Given:-√2x^2+√9=9

.To find:- the value of x

• Solution:- According to the question,we have to determine the value of x and the equation is

√2x² + √9 = 9

or, √2x² + 3 = 9

or, √2x= 9-3

or, 2x ^ 2 = 36

or,x²=18= (3-√2)²

so, x = 3sqrt(2), - 3sqrt(2)

so the value of x is 3√2 and -3√2