Question

Solve for x. x2−9=16 Enter the solutions for the equation in the boxes. x = ___ or x = ___

Answer 1

Answer:

x = 5 or x = -5

Step-by-step explanation:

x^2−9=16

Add 9 to both sides

x^2 = 25

√x^2 = √25

x = 5 or x = -5

Answer 2

X²–9=16

Carry over the –9 (Add 9 to both sides)

x²=16+9

x²= 25

x²= 25÷1

x²= 25

Find the square root of number

x²= √25

Therefore x²= 5 or -5.

I HAD TO FIND THE SQUARE OF 25 BECAUSE X IS SQUARED. IF THE ANSWER WAS 25, THE X WOULD NOT HAVE HAD A SQUARE. THUS, THE ANSWER WOULD'VE BEEN WRONG IF THE ANSWER WAS 25.

ISN'T 5²–9= 16?

5² – 9 ->25 – 9= 16

YES, IT IS.

HOPE THIS HELPS YOU :)