square the following trinomials (x + y + z)( x + y + z)
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square the following trinomials (x + y + z)( x + y + z)
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Answer:
X²+y²+z²
Step-by-step explanation:
(x+y+z) (x+y+z)
x+x=x²
y+y=y²
z+z=z²