Question

expand (x + 2y + 5z)²​

Answer 1

Answer:

x²+4y²+25z²+4xy+20yz+18xz

Step-by-step explanation:

(x+2y+5z)²

formula:-(a+b+c)²=a²+b²+c²+2ab+2bc+2ca

x²+(2y) ²+(5z) ²

x²+4y²+25z²+2*x*2y+2*2y*5z+2*5z*x

x²+4y²+25z²+4xy+20yz+18xz

Answer 2

Answer:

here we go

Step-by-step explanation:

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