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7x2 + 5x – 2 factor problem completely?
Factor problem completely
7x2 + 5x – 2
show work
9 Answers
- Anonymous9 years agoFavorite Answer
7x2=14.
14 + 5 = 19 - 2 = 17X
- 9 years ago
Ok I'm an algebra 2 student and in math team so i'll help you out by teaching you!
Simple I'm only assuming that you meant 7xsquared +5x - 2 = 0 ok?
Now There are many methods to factor "x-puzzle" "box method" "guess and test"
Okay now through x method it's different you can research these three methods however you have to factor this quadratic equation into two binomials
7x^2 + 5x - 2 ------------> (7x-2)(x+1) try using FOIL (First, Out, In, Last) you can research that ok?
That's about it try to memorize at least one of the methods i'd recommend the guess and test and x-puzzle
Source(s): Me Math Team Algebra Two - 9 years ago
-5+- the square root of 5(5)-4(7)(-2) and then all of that over 2(7)
Then you have -5+-9 over 14
so X=2/7 and X=-1
Source(s): HS math - How do you think about the answers? You can sign in to vote the answer.
- Anonymous9 years ago
7x2 + 5x - 2
14 + 5x - 2
+2 +2
__________
14 + 5x or 5x + 14 w/e <-- My Answer
I think xD
Source(s): Math - 9 years ago
im going to use grouping;
7x2+7x-2x-2 <--- 7x-2x=5x
7x(x+1) -2(x+1)
answer= (7x-2)(x+1)
Source(s): algebra2 honors class - Anonymous9 years ago
make the question more clear
im guesing you mean
7*2 + 5(-2)??????????????????????????????????/
7*2=14
=14+5(-2)
=14+-10
=4