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Mathematics 18 Online
OpenStudy (anonymous):

15c^2-7cd-2d^2

OpenStudy (anonymous):

Lol....It is a Quadratic Equation in C...Solve using Quadratic Formula

OpenStudy (anonymous):

15c^2-7cd-2d^2 \[15c^2 - (7d)c - 2d^2 =0\]

OpenStudy (anonymous):

it told me to factor and in clueless

OpenStudy (nubeer):

hmm so what you don't know about quadratic formula? i mean what part u don't get?

OpenStudy (anonymous):

whats quad forumla?

OpenStudy (nubeer):

x= [-b+- (b^2 -4ac)^0.5]/2a a =15 ,b=-7 , c= 2 you will get 2 values of x.. those will be your factors.

OpenStudy (anonymous):

.... i dont think thats what book is asking for... it says factor the trinomial...

OpenStudy (raden):

use factorization it will work....

OpenStudy (anonymous):

how?

OpenStudy (anonymous):

can you show me the first step?

OpenStudy (raden):

factor of 15c^2 is 5c times 3c factor of 2d^2 is d times 2d just combine of them in bracket

OpenStudy (raden):

(5c......?)(3c......?)

OpenStudy (raden):

it means (5c + d)(3c - 2d)

OpenStudy (anonymous):

how did you factor 5c and 3c?

OpenStudy (raden):

for check the truth : |dw:1350549535149:dw|

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