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OpenStudy (anonymous):
(x + 11)(x - 11) is x^2 + 22
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OpenStudy (anonymous):
thanks :)
OpenStudy (diyadiya):
x^-121
hero (hero):
x^2 - 121
OpenStudy (diyadiya):
it isn't 22
OpenStudy (anonymous):
how did you get 121
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OpenStudy (diyadiya):
-11 * 11 =121
hero (hero):
difference of squares (a+b)(a-b) = a^2 - b^2
OpenStudy (anonymous):
ok i see
hero (hero):
x = a b = 11
hero (hero):
Mya, I know where your school is
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hero (hero):
I'm coming to class
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