Question

What identity should be used to Expand (x+2y+4z)^2​

Answer 1

Answer:

this is answer of your question.

Answer 2

$\bf{\underline{\underline{Question:-}}}$

What identity should be used to Expand

$\tt(x+2y+4z)^2$

$\bf{\underline{\underline{FORMULA:-}}}$

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

$\bf{\underline{\underline{solution:-}}}$

here

• x=1
• y=2y
• z=4z

$\tt→ (x+2y+4z)^2= (x^2)+(2y^2)+(4z)^2\\\tt+2×x×2y+2×2y×4z+2×4z×x\\\tt→ x^2+ 4y^2+16z^2+4xy+16yz+8zx$

Hence,

$\tt→{\fbox{x^2+ 4y^2+16z^2+4xy+16yz+8zx}}$