clamin
  • clamin
PLEASE HELP!!! MEDAL!!! Use synthetic division to solve.
Mathematics
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clamin
  • clamin
PLEASE HELP!!! MEDAL!!! Use synthetic division to solve.
Mathematics
katieb
  • katieb
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Nnesha
  • Nnesha
yayyay!
clamin
  • clamin
\[\left( -15p^4+\frac{ 21 }{ 2} p^3-\frac{ 45 }{ 2 }p^2+63p-36\right) \left( 9p-9 \right)\]
clamin
  • clamin
there a division sign in between the parenthesis i forgot to put it

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Nnesha
  • Nnesha
;-; ugly q
Nnesha
  • Nnesha
alright first set 9p-9 equal to zero then solve for p 9p-9 = 0 p =?
clamin
  • clamin
p=1
Nnesha
  • Nnesha
right now right the coefficients|dw:1443658432075:dw| carry down the leading coefficient then multiply by 1 write the answer above the line and then combine them
clamin
  • clamin
|dw:1443658410770:dw| thats all i got so far
clamin
  • clamin
i know the steps i just hate solving the fractions @Nnesha
Nnesha
  • Nnesha
aw same here i don't like fractions :/
Nnesha
  • Nnesha
so it's \[\frac{ 21 }{ 2}-15\] -15 is same as -15/1 \[\frac{ 21 }{ 2}-\frac{15}{1}\]find the common denominator
clamin
  • clamin
3
Nnesha
  • Nnesha
wait do you mean 3 is a common denominator ?
Nnesha
  • Nnesha
when the denominator are not the same we should multiply them
Nnesha
  • Nnesha
hey understand ? let me know if you have any quesitno :=)
Nnesha
  • Nnesha
question *
clamin
  • clamin
21 and 15 common denommintor is 3 right??
Nnesha
  • Nnesha
no common denominator is 2 like i said when the common denominator aren't the same we should multiply them 2 times 1 = 2 \[\frac{\color{ReD}{ 1}(21)-\color{blue}{2}(15) }{ 2}\] and when we write it as common denominator we should multiply the numerator of first fraction with the denominator of 2nd fraction and multiply the numerator of 2nd fraction by the denominator of 1sst one
Nnesha
  • Nnesha
now simplify it
clamin
  • clamin
9/2
Nnesha
  • Nnesha
ye but its supposed to be negative
Nnesha
  • Nnesha
anywz -2 times 15=-30 (21-30)/2 = -9/2
Nnesha
  • Nnesha
|dw:1443660319587:dw| now repeat the step
Nnesha
  • Nnesha
|dw:1443660350489:dw|\[-\frac{ 45 }{ 2 }-\frac{ 9 }{ 2}\]this one would be easy denominators are the same
clamin
  • clamin
18
Nnesha
  • Nnesha
hmm no how did you get that ?
clamin
  • clamin
\[-15p^4-\frac{ 9 }{ 2 }p^3+18p^2+81p+45\] this is my final answer @Nnesha
Nnesha
  • Nnesha
18 isn't correct
clamin
  • clamin
i subtract 45-9=36 so its 36/2 =18
Nnesha
  • Nnesha
it's -45
clamin
  • clamin
ohh yea i forgot that it negative
clamin
  • clamin
i got 27
Nnesha
  • Nnesha
-45-9= ??
Nnesha
  • Nnesha
when u add two negative number answer would be what ??
Nnesha
  • Nnesha
u there ?? @clamin
clamin
  • clamin
positive
clamin
  • clamin
-54
Nnesha
  • Nnesha
right -54 so divide 2 =-27 negative not positive

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