Question

x2 + y2 + 4z2 – 2xy + 4yz – 4zx​

Answer 1

Answer:

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

here a=x,b=y,c=4z

(x+y+4z)^2

Step-by-step explanation:

hope this helps!!!!!

Answer 2

Answer:

(x+y+4z)^2

Step-by-step explanation:

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

here a=x,b=y,c=4z

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