Answer: x = <u>+</u> 5
Explanation: To solve the equation x² - 25 = 0, our first step is to get the x² term by itself by adding 25 to both sides of the equation.
On the left side of the equation, the -25 and +25 cancel out and we have x² and on the right side of the equation, 0 + 25 is 25.
So we have x² = 25².
Now to get <em>x</em> by itself, we take the square
root of both sides of the equation.
On the left, the square root of x² is <em>x</em> snd on the right, since 25is the perfect square 5 · 5, the square root of 25 is 5 and don't forget to use plus or minus when taking the square root of both sides of an equation.
So our answer is <em>x = </em><u><em>+</em></u><em> 5</em>.