Question

the value of x + 2 Y + 2 Z whole square + X - 2 Y - 2 Z whole square is

please answer my question friends​

Answer 1

Answer:

you can also find the answer by using

(a+b+c)2 =a2+b2+c2+2ab+2bc+2ac

OK best of luch

you have to do practice ok

Answer 2

Step-by-step explanation:

=(x+2y+2z)²+(x-2y-2z)²

={x+2(y+z)}²+{x-2(y+z)}²

Let

a=x

b=2(y+z)

Now

The Expression becomes

(a+b)²+(a-b)²

=(a²+b²+2ab)+(a²+b²-2ab)

=2(a²+b²)

=2{(x)²+(2(y+z))²}

=2x²+4(y²+z²+2yz)

=2x²+4y²+4z²+8yz

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