Question

anyone answer my question I mark you brainliest ​

Answer 1

Answer:

(a+b+c)^2=a^2+b^2+c^2+2ab+2bc+2ca

using this identity

(2x+y+z)^2

=(2x)^2+y^2+z^2+2.2x.y+2.y.z+2.z.2x

=4x^2+y^2+z^2+4xy+2yz+4xz