3(x-2y) +5(y-2z) -4-(z-2x)
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Answer:
Step-by-step explanation:
(-3x+5y-2z)²
=>(-3x)²+(5y)²+(-2z)²+2(-3x×5y)+2(5y×-2z)+2(-2z×-3x)
=>9x²+25y²+4z²-30xy-20yz+12zx
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