Question

expand this please
(3a-2b-c)^2​

Answer 1

Step-by-step explanation:

=(a+b+c)^2

=a^2+b^2 +c^2 +2ab+2bc+2ac

BY THIS FORMULA

=9a^2+4b^2+c^2-12ab+4bc-6ac is the correct answer...

Hope it will help u....

PLEASE MARK IT AS A BRAINLIEST ANSWER

Answer 2

$\:\:\:\: \: \: \: \: \: \: \: \: \: \: \large\mathfrak{\underline{\underline{\huge\mathcal{\bf{\boxed{\huge\mathcal{~~QUESTION~~}}}}}}}$

• expand this please
• (3a-2b-c)^2

$\:\:\:\: \: \: \: \: \: \: \: \: \: \: \large\mathfrak{\underline{\underline{\huge\mathcal{\bf{\boxed{\huge\mathcal{!!ANSWER!!}}}}}}}$

$\:\: \underline{\underline{\bf{\large\mathfrak{~~solution~~}}}}$

$(3a - 2b - c) {}^{2} \\ = (3a) {}^{2} + ( - 2b) {}^{2} + ( - c) {}^{2} + 2((3a)( - 2b) + ( - 2b)( - c) + ( - c)(3a)) \\ = 9a {}^{2} + 4b {}^{2} + c {}^{2} + 2( - 6ab + 2bc - 3ac) \\ = 9a {}^{2} + 4b {}^{2} + c {}^{2} - 12ab + 4bc - 6ac$

$\huge\mathcal\green{\underline{hope\:\: this\:\: helps\:\: you}}$