expand the (x+3y+5z)2
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(x+3y+5z)2
- 2x+6y+10z
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Answer:
(x+3y+5z) (x+3y+5z)
x(x+3y+5z)+3y(x+3y+5z)+5z(x+3y+5z)
x²+3xy+5xz+3xy+9y²+15yz+5xz+15yz+25z²
x²+9xy+10xz+9y²+30yz+25z²
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