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Mathematics 21 Online
OpenStudy (anonymous):

FACTORING... 25x^2-16

OpenStudy (anonymous):

any ideas?

OpenStudy (anonymous):

try dividing something out? but idk what

OpenStudy (anonymous):

wht is the no that if squared give u 25?

OpenStudy (anonymous):

5 but that doesnt go into 16

OpenStudy (pottersheep):

(5x+4)(5x-4)

OpenStudy (anonymous):

??

OpenStudy (pottersheep):

it's difference of squares, google it ^-^

OpenStudy (anonymous):

yea what no is it that gives u 16 if aquared?

OpenStudy (anonymous):

no no no we didnt learn that -_-

OpenStudy (anonymous):

4

OpenStudy (anonymous):

here (5x)^2-(4)^2

OpenStudy (pottersheep):

(5x+4)(5x-4)

OpenStudy (anonymous):

but dont you have to be able to do the same exact thing to both side??

OpenStudy (anonymous):

yea did the same thing right?

OpenStudy (anonymous):

squared both sides!

OpenStudy (anonymous):

no? you too the sqaure root? nvm sorry i have to go. thank you for your time

OpenStudy (anonymous):

my mom has to get online byee :)

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