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Expand:-(X/3+y/5-z/8)^2 |
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Answer» x²/9+y²/25+z²/64+2xy/15-2yz/40-2xz/24Step-by-step EXPLANATION:we KNOW, (a + b + C)² = a² + b² + c² + 2ab + 2bc + 2AC[here, a= x/3, b= y/5, c= -z/8](x/3+y/5-z/8)²=(x/3)²+(y/5)²+(-z/8)²+2(x/3)(y/5)+2(y/5)(-z/8)+2(x/3)(-z/8)=x²/9+y²/25+z²/64+2xy/15-2yz/40-2xz/24 |
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