Whats the answer of (X+9)^2=25?

Explanation:

Apply the square root to both sides

(x+9)^2 = 25 leads to x+9 = 5 or x+9 = -5

This is because (-5)^2 = 25 and (5)^2 = 25. This is the plus/minus you often see with quadratics.

Solve x+9 = 5 to get x = -4. We subtract 9 from both sides to get this.

Solve x+9 = -5 to get x = -14

That's why the two answers are x = -4 and x = -14.

To check our answers, we plug those x values into the original equation and simplify. We should get the same thing on both sides

(x+9)^2 = 25

(-4+9)^2 = 25 ... replace x with -4

(5)^2 = 25

25 = 25 ... So x = -4 has been confirmed

and,

(x+9)^2 = 25

(-14+9)^2 = 25 ... replace x with -14

(-5)^2 = 25

25 = 25 ... and x = -14 has been confirmed

step-by-step explanation: 4 cause 2+2=4

8+10

step-by-step explanation:

you multiply 4 by 2 and 5 by 2