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OpenStudy (anonymous):
Could someone please help! find the product of (3-4 square root 7)^2 I will draw it to make it clear.
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OpenStudy (anonymous):
|dw:1353289750709:dw|
OpenStudy (anonymous):
\[(3-4\sqrt{7})^2=(3-4\sqrt{7})(3-4\sqrt{7})\]
OpenStudy (phi):
use FOIL just like it was (a+b)(x+y) see http://www.khanacademy.org/math/algebra/polynomials/v/multiplying-binomials
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