Question

Formula of a minus b minus c whole square

Answer 1

heya...

Here is your answer...

(a-b-c)^2 = a^2+b^2+c^2-2 (ab-bc+ac)

It may help you...☺☺

Answer 2

Answer:

Expansion of (a-b-c)²

(a-b-c)² = a²+b²+c²-2ab+2bc-2ca

Step-by-step explanation:

Expansion of (a-b-c)²

= [a+(-b)+(-c)]²

/*By algebraic identity:

$\boxed {(x+y+z)^{2}\\=x^{2}+y^{2}+z^{2}+2xy+2yz+2zx}$*/

=a²+(-b)²+(-c)²+2a(-b)+2(-b)(-c)+2(-c)a

= a²+b²+c²-2ab+2bc-2ca

Therefore,.

Expansion of (a-b-c)²

= a²+b²+c²-2ab+2bc-2ca

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