Question

x2 + 18 = 67
whats the answer?

Answer 1

Answer:

7

Step-by-step explanation:

$x^{2}$ + 18 = 67

You first need to subtract 18 from both sides:

$x^{2}$ + 18 = 67

    - 18    -18

_________

$x^{2}$ = 49

To get rid of the square, you need to square root both sides:

$x^{2}$ = 49

$\sqrt{x^2} = \sqrt{49}$

This leaves you with:

x = 7