Question

write the following expression , using suitable identity

(3a-7b-c)^2​

Answer 1

Step-by-step explanation:

14bc-16

is the correct answer

Answer 2

Step-by-step explanation:

there is a identity -

$(x + y + z) {}^{2} = {x}^{2} + {y}^{2} + z {}^{2} + 2xy + 2yz + 2zx$

Hope ,it helpful for you