Solve the Equation: x²/25 - 1 = 0 Step by Step

Question

x2251=0 \frac{x^2}{25}-1=0

Video Solution

Solution Steps

00:00 Find X
00:03 Multiply by the denominator to eliminate the fraction
00:14 Simplify what we can
00:18 Isolate X
00:27 Extract the root
00:32 When extracting a root there are always 2 solutions (positive, negative)
00:35 And this is the solution to the question

Step-by-Step Solution

To solve the equation x2251=0\frac{x^2}{25} - 1 = 0, we'll follow these steps:

  • Step 1: Rewrite the equation to isolate the quadratic term. Add 1 to both sides to get:

x225=1\frac{x^2}{25} = 1

  • Step 2: Eliminate the fraction by multiplying both sides by 25:

x2=25x^2 = 25

  • Step 3: Solve for xx by taking the square root of both sides. Remember to consider both the positive and negative roots:

x=±25x = \pm \sqrt{25}

  • Step 4: Since 25=5\sqrt{25} = 5, the solutions to the equation are:

x=5x = 5 or x=5x = -5

Therefore, the solution to the problem is x=±5 x = \pm 5 .

Answer

x=±5 x=\pm5