Question
Solve :
$(x+5)(x-5)=24$
$(x+5)(x-5)=24$
✓
Answer
Given $: (x+5)(x-5)=24$
$\Rightarrow x^2-5^2=24 \quad$............. since $(a-b)(a+b)=a^2-b^2$
$\Rightarrow x^2-25=24$
$ \Rightarrow x^2=49 $
$ \Rightarrow x= \pm 7$
$\Rightarrow x^2-5^2=24 \quad$............. since $(a-b)(a+b)=a^2-b^2$
$\Rightarrow x^2-25=24$
$ \Rightarrow x^2=49 $
$ \Rightarrow x= \pm 7$
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