simplify-(2x+3y-5z)^2
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3
Answer:
Step-by-step explanation:
4x²+9y²+25z²
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(2x+3y-5z)²
using identity (a+b+c)²= a²+b²+c²+2ab+2bc+2ca
=(2x)²+(3y)²+(-5z)²+2(2x)(3y)+2(3y)(-5z)+2(-5z)(2x)
= 4x²+9y²+25z²+12xy-30yz-20xz
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