Question 922830
IF a is not equal to b and a^2-b^2/9=a+b,then what is the value of a-b?
:
{{{((a^2-b^2))/9 = a+b}}}
multiply both sides by 9
{{{a^2-b^2 = 9(a+b)}}}
Factor the left side as the "difference of squares"
(a+b)(a-b) = 9(a+b)
divide both sides by (a+b)
a - b = 9
;
Pretty easy, right?