Question

Who knows the answer plzz help​

Answer 1

x = -3 +
`(5√(2) )/(2)`, -3 -
`(5√(2) )/(2)`

Explanation:

Step 1: Isolate x's

2x² + 12x = 7

Step 2: Factor

2(x² + 6x) = 7

x² + 6x = 7/2

Step 3: Complete the Square

x² + 6x + 9 = 7/2 + 9

(x + 3)² = 25/2

Step 4: Solve for x

√(x + 3)² = √25/2

x + 3 = 5√2/2

x = -3 ± 5√2/2