Solve MKE BRAINLIEST!
2x^2 - 28 = x^2 + 15
What is the answer!

x =  ± sqrt(43)

Step-by-step explanation:

2x^2 - 28 = x^2 + 15

Subtract x^2 from each side

2x^2-x^2 - 28 = x^2-x^2 + 15

x^2 -28 = 15

Add 28 to each side

x^2 - 28 +28=  15+28

x^2 = 43

Take the square root of each side

sqrt(x^2) = ± sqrt(43)

x =  ± sqrt(43)

the answer os eleven

Step-by-step explanation:

As oyu see the half way number is 4 higher that 7 and 4 lower than 15.