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Expand:(3a-7b-c)whole square

Posted by Harish Raj 8 years, 3 months ago

CBSE > Class 09 > Mathematics

2 answers

Bonbon Sangma 6 years, 1 month ago

(3a+7b+c)

0Thank You

Amar Kumar 8 years, 3 months ago

formula (a+b+c)²=a²+b²+c²+2(ab+ bc+ ca)

(3a-7b-c)²=(3a)²+(-7b)²+(-c)²+2{(3a)(-7b) +(-7b)(-c) +(-c)(3a)}

=9a²+49b²+c² -42ab+14bc-6ca

0Thank You

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Posted by Sheikh Alfaz 1 month, 2 weeks ago

CBSE > Class 09 > Mathematics