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CheetahBooks1Best ResponseYou've already chosen the best response.0
GCF means Greatest Common Factor.
 one year ago

AravindGBest ResponseYou've already chosen the best response.0
@allea_marie reply pls
 one year ago

scarydoorBest ResponseYou've already chosen the best response.2
There needs to be more here, for there to be something to solve.
 one year ago

allea_marieBest ResponseYou've already chosen the best response.0
Yes it stands for Greatest Common Factor
 one year ago

scarydoorBest ResponseYou've already chosen the best response.2
so what are the two numbers that you want to find the greatest common factor of?
 one year ago

CheetahBooks1Best ResponseYou've already chosen the best response.0
But why do you need GCF to solve this? It is quite simple. Just subtract 520 and carry over the x^2. That would be 15x^2
 one year ago

allea_marieBest ResponseYou've already chosen the best response.0
Okay thanks, how would you solve 2x²  21x=54
 one year ago

scarydoorBest ResponseYou've already chosen the best response.2
that one can be solved by factorising the polynomial.
 one year ago

scarydoorBest ResponseYou've already chosen the best response.2
\[ 2x^2  21x =54 \] \[2x^2  21x  54 = 0 \] Now you want to solve: \[(2x + a)(x +b) = 2x^2  21x  54 \] Note that you must have \[ a*b = 54 \]
 one year ago

scarydoorBest ResponseYou've already chosen the best response.2
this won't always work so easily. But I can see here that it does.
 one year ago
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