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OpenStudy (anonymous):
how to factor polynomials? example equations below... :(
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OpenStudy (anonymous):
\[x ^{2} - 400\] \[x ^{2}+20x+100\]
hartnn (hartnn):
notice that 400=20^2 then use, \(\large a^2-b^2=(a+b)(a-b)\)
OpenStudy (anonymous):
Thank you very much!
hartnn (hartnn):
welcome ^_^ do you also need help for 2nd ? x^2+20x+100 ?
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