Ginger was asked to solve 25x2−196=0

by factoring using the difference of squares pattern. What is/are the correct solution(s)?(1 point)
Responses

There is no solution for x because the difference of squares pattern does not apply.
There is no solution for x because the difference of squares pattern does not apply.

x=145
x equals Start Fraction 14 over 5 End Fraction

x=19625
x equals Start Fraction 196 over 25 End Fraction

x=−145
, x=145

1 answer

To solve the equation \(25x^2 - 196 = 0\) using the difference of squares pattern, we can first rewrite the equation in a factored form. Notice that this equation can be expressed as a difference of squares:

\[ 25x^2 - 196 = (5x)^2 - (14)^2 \]

According to the difference of squares formula, \(a^2 - b^2 = (a - b)(a + b)\), we can factor the equation as follows:

\[ (5x - 14)(5x + 14) = 0 \]

Setting each factor to zero gives us the possible solutions:

  1. \(5x - 14 = 0\)

    • \(5x = 14\)
    • \(x = \frac{14}{5}\)
  2. \(5x + 14 = 0\)

    • \(5x = -14\)
    • \(x = -\frac{14}{5}\)

Thus, the correct solutions are:

\[ x = \frac{14}{5} \quad \text{and} \quad x = -\frac{14}{5} \]

Among the choices provided, the closest match would be:

  • \(x = - \frac{14}{5}, x = \frac{14}{5}\)

Therefore, the correct response is:

x = -\( \frac{14}{5} \), x = \( \frac{14}{5} \).