Question

Find the value of x in the equation 2√ x + 20 = 15 + 3√ x A. 16 B. –5 C. 25 D. 1

Answer 1

The answer is C. 25
                        

Answer 2

Answer:  C. 25

Step-by-step explanation:

Since, Here given expression,

2√ x + 20 = 15 + 3√ x  

⇒2√ x + 20 - 15 =  3√ x   (By subtracting 15 on both sides)

⇒2√ x + 5 =  3√ x  

⇒ 5 =  3√ x - 2√ x   (By subtracting 2 √ x on both sides)

⇒5 = ( 3-2)√ x

⇒√ x  = 5

⇒x = 25 (By squaring both sides )

Therefore, Option C is correct.