Expand (x+2y+ 4z)2 using suitable identity.
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Step-by-step explanation:
x^2+4y^2+16z^2+4xy+16yz+8xz
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Answer:
The answer is below
Step-by-step explanation:
(a+b+c)²= a²+b²+c²+2ab+2bc+2ca
= (3x)²+(-2y)²+(-4z)²+2(3x)×(-2y)+2(-2y)×(-4z)+2(-4z)(3x)
= 9x²+4y²+16z²-12xy+16yz-24zx.
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