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OpenStudy (anonymous):
please help last one. show me how plz -4+c^2
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hartnn (hartnn):
\(a^2-b^2 =(a-b)(a+b)\)
hartnn (hartnn):
and 4 is the square of what number ?
OpenStudy (anonymous):
2
hartnn (hartnn):
so, its c^2-2^2 can you use the formula for factoring ?
OpenStudy (anonymous):
i dont think so
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hartnn (hartnn):
|dw:1360133433243:dw|
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