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Mathematics 15 Online
OpenStudy (anonymous):

please solve

OpenStudy (anonymous):

\[a²-9b²/a²-16b² x a + 4b/a - 3b\]

OpenStudy (anonymous):

give a medal

OpenStudy (anonymous):

that x is into sign and not xa

OpenStudy (anonymous):

help @mathmale

OpenStudy (anonymous):

@ParthKohli

OpenStudy (mathmale):

Please take a screen shot of the original problem and share that screen shot with me here.

OpenStudy (anonymous):

how to do that

OpenStudy (mathmale):

Tomorrow, please ask your friends at school, or one of your teachers, to show you how to do that. If there are mistakes in the way you have presented this problem, then both of us could end up wasting time. I can see the very top expression OK: It appears to be \[a^2-9b^2\]Factor that, please.

OpenStudy (mathmale):

Note that this is the difference of two squares. There's a special formula for factoring the difference of two squares. Do you know it?

OpenStudy (anonymous):

no

OpenStudy (mathmale):

Have you a textbook, a workbook, or online materials that discuss "special products and factoring?"

OpenStudy (mathmale):

For example, \[a^3-b^3=(a-b)(a^2+ab +b^2)\] is one special product with special factors. There is a similar formula for \[a^2-b^2\]

OpenStudy (anonymous):

a² - 2ab + b²

OpenStudy (anonymous):

@ganeshie8

OpenStudy (anonymous):

@mathmale

OpenStudy (mathmale):

You're in the right section of your reference material. Note that \[(a+b)^2 =(a+b)(a+b) = a^2+2ab+b^2.\] However, I was asking you to factor \[a^2-b^2\] Look in the same reference material for a formula for that factoring.

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