Question

m^2 + 2m - 3/m^2 +4m -5 x m^2 - 3m - 10/m^2 + 5m + 6 i got -3m/10m

Answer 1

m^2 + 2m - 3/m^2 +4m -5 times m^2 - 3m - 10/m^2 + 5m + 6 i got -3m/10m

Answer 2

no i don't think that is correct

Answer 3

neither do i :p

Answer 4

after factoring numerator is \[(m-1)(m+3)(m-5)(m+2)\]

Answer 5

denominator is
\[(m+5)(m-1)(m+3)(m+2)\]

Answer 6

oh i didnt factor :|

Answer 7

gotta factor and cancel.

Answer 8

common factor are m-1, m+3, m+2

Answer 9

can you help me with one more?

Answer 10

10-5x/3 divided by x-2/12x

short one

Answer 11

leaving \[\frac{m-5}{m+5}\]

Answer 12

\[\frac{10-5x}{3}\div\frac{x-2}{12x}\]?

Answer 13

exactly

Answer 14

just like with regular fraction invert and multiply

Answer 15

i got 120x-60x^2/3x-6

Answer 16

\[\frac{10-5x}{3}\times \frac{12x}{x-2}\]

Answer 17

cancel first, multiply last

Answer 18

what do i cancel out?

Answer 19

\[\frac{5(x-2)\times 12x}{3(x-2)}\]

Answer 20

cancel the 3 and the x - 2

Answer 21

leaving you with
\[5\times 4x=20x\]

Answer 22

oopsssssssssss

Answer 23

wrong sorry

Answer 24

sorry give me a second i factored incorrectly

Answer 25

cancel the x-2 not the 3

Answer 26

hold on

Answer 27

\[\frac{10-5x}{3}\times \frac{12x}{x-2}=\frac{5(2-x)\times 12x}{3(x-2)}\]

Answer 28

i factored incorrectly at first. sorry.

Answer 29

now 3 goes in to 12 4 times so you can cancel the 3 and replace the 12 by a 4

Answer 30

yea i saw that but i didnt know cus ur the one with the ansers :p

Answer 31

and finally \[\frac{2-x}{x-2}=-1\]

Answer 32

hope that is clear

Answer 33

so you can cancel the 2-x and the x-2 but make sure to change the sign, because it is -1 and not 1

Answer 34

whered the 5 go?

Answer 35

still up there. so you get
\[-20x\]

Answer 36

ohk thanks

Answer 37

\[5\times 5x\times -1=-20x\]

Answer 38

typo

Answer 39

\[5\times 4x\times -1=-20x\]

Answer 40

so its -20x/x-2?

Answer 41

nope

Answer 42

x-2 in denominator canceled with 2-x in numerator to give -1

Answer 43

so there is no denominator at all.

Answer 44

just -20x

Answer 45

oh.

Answer 46

okay thank you

Answer 47

is it clear that \[\frac{2-x}{x-2}=-1\]?

Answer 48

i dont see why it turned into -1

Answer 49

the top is the negative of the bottom

Answer 50

try it with numbers:\[\frac{2-5}{5-2}=-1\]

Answer 51

ah. i get it now

Answer 52

\[\frac{2-10}{10-2}=-1\]

Answer 53

-3/3 = -1

Answer 54

-8/8=-1

Answer 55

a good trick to know\[\frac{a-b}{b-a}=-1\]

Answer 56

ok well im gettin off now thank you

Answer 57

yes the top is the negative of the bottom that is why you can cancel

Answer 58

welcome