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Mathematics 15 Online
OpenStudy (anonymous):

simplify (3a-4)^2

OpenStudy (ageta):

(3a−4)2 =(3a+−4)(3a+−4) =(3a)(3a)+(3a)(−4)+(−4)(3a)+(−4)(−4) =9a2−12a−12a+16 =9a2−24a+16

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