Question

Factorize (3a - 7b+c)²​

Answer 1

Answer:

Sorry Don't Know The Answer

Answer 2

Answer:

here is the answer

Step-by-step explanation:

we know (a + b)^2 =  $a^{2} +b^{2} +2ab$

let 3a-7b = a

and c =b

therefore the answer = $(3a - 7b)^2+ c^2 + 2(-21abc)$

we know(a- b)^2=$(a - b)^2 = a^2 +b^2 -2ab$

so therefore, our equation =

$(3a^2) +(7b^2) -2(21ab) +c^2 +2(-21abc)$

this is the answer

$9a^2 + 49b^2 -42ab +c^2 -42abc$