http://prntscr.com/lw4yu3
@Vocaloid
rules for dividing fractions: switch the numerator and denominator on the second fraction then change the multiplication sign to a division sign after that you just need to factor out any integers and cancel terms when possible
and this is why Vocaloid is at 100....
Im thinking A?
yeah good
same principle as last time, flip the second fraction, change division to multiplication, cancel out terms when applicable
D?
hmm
try taking the polynomials from D, factoring, and cancelling out terms
Im a bit confused
flip the second fraction from D, then factor for example, x^2 - 3x - 88 factors into (x-11)(x+8) which lets you cancel (x-11) from the numerator of the first fraction and the denominator of the second fraction
A?
wait LOL this is confusing me
im bad at factoring
to factor x^2 - 2x - 63 pick two numbers that multiply together to get -63 and add to -2
(x−9)(x+7)
good so putting everything together we have (x-11)(x+8) * (x-9)(x+7)
(x-11)(x+7)(x-7) notice you can cross out (x-11) and (x+7) and after that what's left will be your solution
so wouldnt it be C?
yup good
yeah that's what i got too
hm not quite if you multiply (m+1)/(m+4) by (m+2)/(m+2) you will make both denominators equal to (m^2+6m+8) so the fractions can be added
so B
check your math again (m+1)(m+2) + 5m + 10 = ?
Oh D
yes
any ideas? as a hint try factoring (h^2-9)
(h+3)(h-3)
so b and c?
good
yeah good
yeah good
okay thanks
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