Question

What is the solution of...

Answer 1

Explanation:

`\sqrt{x^(2)+49}=x+5\\`

Take square both sides.

`(\sqrt{x^(2)+49})^(2)=(x+5)^(2)\\\\x^(2)+49=x^(2)+2*x*5+5^(2)\\\\x^(2)+49=x^(2)+10x+25\\\\x^(2)-x^(2)+49=10x+25\\\\49=10x+25\\\\49-25=10x+25-25\\\\24=10x\\\\10x=24\\\\x=(24)/(10)\\\\x=(12)/(5)`