Question

Expand the square: (2x + 3y + 4z)​

Answer 1

Answer:

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Answer 2

Step-by-step explanation:

(2x+3y+4z)²

(a+b+c)²= a²+b²+c²+2ab+2bc+2ac

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. . (2x+3y+4z)²=(2x)²+(3y)²+(4z)²+2(2x)(3y)+ 2(3y)(4z) 2(2x)(4z)

=4x²+9y²+16z²+12xy+24yz+16zx.