Expand the following (a-3b+c)2
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You can solve this by using formula-
(a+b+c)^2
(a^2+b^2+c^2+2ab+2bc+2ca)
(a-3b+c)^2
(a^2+9b^2+c^2-2×a×3b-2×3b×c+2×a×c)
a^2+9b^2+c^2-6ab-6bc+2ac
(a+b+c)^2
(a^2+b^2+c^2+2ab+2bc+2ca)
(a-3b+c)^2
(a^2+9b^2+c^2-2×a×3b-2×3b×c+2×a×c)
a^2+9b^2+c^2-6ab-6bc+2ac
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SoumyaBhargava:
I m not able to understand
Will u pls write it
On a page and hen send to me
Are you able to understand now?
Its still same
Is this right?
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