Search 72,402 tutors FIND TUTORS
Search for tutors
Ask a question
0 0

Im a freshmen in highschool, I dont know how to do some algebra equations like (5x-2) ( x2-x3 )-(2x2-3x-4) someone please help me!

Tutors, please sign in to answer this question.

1 Answer

Hi John,
 
To solve this problem, first thing you'll want to do is multiply out the first set of parenthesis.  So, you want to multiply (5x-2) times (x2-x3).  This gives 5x3 - 5x4 - 2x2 + 2x3 = -5x4 + 7x3 - 2x
 
Now, take (-5x4 + 7x3 - 2x2) and subtract (2x2 - 3x - 4).  This gives -5x4 + 7x3 - 2x2 - 2x2 + 3x + 4
 
Collecting like terms, we get -5x4 + 7x3 - 4x2 + 3x + 4.