If x2 = 30, what is the value of x? ±60 ±15 ±square root of 30 ±square root of 15

Subtract 30, then factor the equation.

... x² = 30

... x² - 30 = 0

... (x -√30)(x +√30) = 0

By the zero product rule, the solutions are values of x that make a factor be zero.

... x - √30 = 0 . . . . the first factor is zero

... x = √30

... x + √30 = 0 . . . . the second factor is zero

... x = -√30

The solutions are . . .

... x = ±√30 . . . . . matches your 3rd choice

answer: 180

step-by-step explanation:

12-2=10

20-2=18

10x18=180

answer: 2x + 2 − 2 = 10 − 2; subtraction property of equality

step-by-step explanation: