Question

Solve the question 2 (3x plus 5) Square - 16 = 0 buy completing the square​

Answer 1

1/3(4√2/2- 5)

-1/3(4√2/2 + 5)

Explanation:

2(3x+5)² -16=0

2(3x+5)²=16

(3x+5)² = 4²/2

3x+5= 4/√2 ⇒ 3x= 4/√2- 5 ⇒ x= 1/3(4√2/2- 5)

3x+5= -4√2 ⇒ x= -1/3(4√2/2 + 5)