Question 176041
{{{((2/5)x^2 + (3/4)x + 5) – ((2/3)x^2 – (2/3)x – 6)}}}
When you have lots of ( )s and [ ]s, it can get confusing
One way to help with this is to say
{{{A = (2/5)x^2 + (3/4)x + 5}}}
{{{B = (2/3)x^2 - (2/3)x - 6}}}
Now rewrite the expression
{{{A - B}}}
What's {{{-B}}}?
{{{-B = -(2/3)x^2 + (2/3)x + 6}}}
Now combine like terms
{{{A - B = (2/5)x^2 - (2/3)x^2 + (3/4)x + (2/3)x + 5 + 6}}}
{{{A - B = (6/15)x^2 - (10/15)x^2 + (9/12)x + (8/12)x + 11}}}
{{{A - B = -(4/15)x^2 + (17/12)x + 11}}}