my question is 2x^2-5x+7 - x^2+3x-8
x^2-2x-15 x^2-2x-15
the common factor is (x-5)(x+3) but do still multiply the numerator with all of the denominator. or do i collect like terms. If i collect like terms i got
3x^4+2x+1. and i cant factor that out
my question is 2x^2-5x+7 - x^2+3x-8
x^2-2x-15 x^2-2x-15
the common factor is (x-5)(x+3) but do still multiply the numerator with all of the denominator. or do i collect like terms. If i collect like terms i got
3x^4+2x+1. and i cant factor that out
the denominator's are the same, just subtract the numerators and then simplify:
now simplify the top, then factorize to see if anything cancels
y+2 - y-4
y-5 y+3... i changed the numerator's signs
y-2 + y+4
y-5 y+3 im confused on what i should do when i see that the demonators are different ... do i factor them out or do i mult each one by the num
y+2 - y-4
y-5 y+3... i changed the numerator's signs
y-2 + y+4
y-5 y+3 im confused on what i should do when i see that the demonators are different ... do i factor them out or do i mult each one by the num
no need to go there just yet. see post #5 here to see a quick method for adding fractions like these.
after reading that, you should understand how i made the first step:
ok i understand that..
i combine like terms and then i get this -4y+26
(y-5)(y+3)
i can factor out -2(2y-12) but i can factor out a 2 now. -2+2(y-6). what do i do with the -2+2 do i multiply it. -4(y-6).
ok i understand that..
i combine like terms and then i get this -4y+26
(y-5)(y+3)
i can factor out -2(2y-12) but i can factor out a 2 now. -2+2(y-6). what do i do with the -2+2 do i multiply it. -4(y-6).
you made a mistake somewhere. most likely with the signs. your numerator should come out to