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OpenStudy (anonymous):
solve this equation x²-49=0
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OpenStudy (karatechopper):
ah yes quadratic equations:)
OpenStudy (karatechopper):
ok so do u know this is a difference of squares?
OpenStudy (karatechopper):
and that you can solve this equation in 4 different ways?
OpenStudy (anonymous):
x^2=49 squr ( X^2 ) = squr 49 x=plus minus 7
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