Question 973282
.
x=a number
{{{x-7}}} The difference of a number and 7
{{{2(x-7)}}} Twice the difference of a number and 7.
{{{sqrt(2(x-7))}}} Square root of twice the difference.
{{{sqrt(2x-14)=6}}} Square each side
{{{2x-14=36}}}
{{{2x=50}}}
{{{x=25}}}
ANSWER: The number is 25