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Expand (3a-5b-c)²

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Expand (3a-5b-c)²

Posted by Shameema Salam11 5 years, 2 months ago

CBSE > Class 09 > Mathematics

3 answers

Arti Singh 5 years, 2 months ago

(3a-5b-c)²= 3a²+5b²+c²+2(3a)(-5b)+2(-5b)(-c)+2(-c)(3a) = 9a²+25b²+c²-30ab+10bc-6ac

Shreya Raj 5 years, 2 months ago

?

Pankaj Singh 5 years, 2 months ago

(3a +(-5b)+(-c)² = (3a)² + (-5b)² + (-c)² + 2(3a)(-5b) + 2(-5b)(-c) + 2(3a)(-c) = 9a² + 25b² + c² - 30ab + 10bc - 6ac

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