Asked by kiearra
factor the expression:
10a^2-19a+7
ok I no how to start of which would be
(10a- )(a+ )
but i don't no how to factor it from here
10a^2-19a+7
ok I no how to start of which would be
(10a- )(a+ )
but i don't no how to factor it from here
Answers
Answered by
Reiny
If you are in a class-room situation, then you should have been taught some kind of "method" to do these, just plain guessing works only up to a point.
there are actually two choices for the first terms
(10x..)(x...) or (5x....)(2x....)
at the back it would have to be
(..-7)(...-1) or (...+7)(...+1)
remember, after you make your choice, expand to see if you get the original.
there are actually two choices for the first terms
(10x..)(x...) or (5x....)(2x....)
at the back it would have to be
(..-7)(...-1) or (...+7)(...+1)
remember, after you make your choice, expand to see if you get the original.
Answered by
kiearra
ok i get it now i just didn't no what to do with the middle number
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