Conjecture: If 2(x^2 + 5) = 60, then x is 5 or –5.

1: 2(x^2 + 5) = 60
2: 2x^2 + 10 = 60
3: 2x^2 = 50
4: x^2 = 25
5: x = ±5

Please help. Will give brainliest