QuestionFactor completely: $25-x^{2}=$ $\square$ Question Help: Message instructor Submit Question
Question 15 0/3 pts 3 99 Det
Solve. $\begin{array}{l} 25 x^{2}-49=0 \\ x=\square \end{array}$ $\square$ Question Help: Video Message instructor (in)
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Question 16 0/3 pts $3 \rightleftarrows 99$ Det
Solve. $\begin{array}{l} 64 x^{2}-49=0 \\ x=\square \end{array}$ $\square$

Studdy Solution
The factored form of $25 - x^2$ is $(5 + x)(5 - x)$ .
The solutions for $25x^2 - 49 = 0$ are $x = \frac{7}{5}$ and $x = -\frac{7}{5}$ .
The solutions for $64x^2 - 49 = 0$ are $x = \frac{7}{8}$ and $x = -\frac{7}{8}$ .

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