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Mathematics 16 Online
OpenStudy (snowcrystal):

Help

OpenStudy (snowcrystal):

Factor 49t^2 -9

OpenStudy (anonymous):

http://www.wolframalpha.com/input/?i=factorize+49t%5e2+-9&incTime=true hope this helps

OpenStudy (***[isuru]***):

\[a^{2}b^{2} - c^{2} = (ab - c)(ab+ c)\]

OpenStudy (***[isuru]***):

u can use this... \[49t^{2} - 9 = 7^{2}t^{2} - 3^{2}\]

OpenStudy (snowcrystal):

A.) (7t+3)(7t+3) B.) (7t+3)(-7t-3) C.) (7t+3)(7t-3) D.) 7t-3

OpenStudy (***[isuru]***):

now it is in the same form of \[a^{2}b^{2} - c^{2}\] so.. use the same factorization ii used for the a^2b^2 - c^2 what will u get ?

OpenStudy (snowcrystal):

ummmmm i have no clue i am horrible at factoring

OpenStudy (***[isuru]***):

\[a^{2}b^{2} - c^{2} = (ab - c)(ab +c)\] \[7^{2}t^{2} - 3^{2} = ( \ \ \ ? \ \ )( \ \ ? \ \ )\]

OpenStudy (***[isuru]***):

they r almost identical ... can u do it now ?

OpenStudy (***[isuru]***):

just follow the pattern !

OpenStudy (snowcrystal):

Would it be (7t-3)(7t+3)

OpenStudy (***[isuru]***):

yep!

OpenStudy (snowcrystal):

yay!!! Thanks so much

OpenStudy (***[isuru]***):

u r welcome!

OpenStudy (snowcrystal):

:D

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