已知m,x,y满足条件:(1)2/3(x-5)的2次方+5|m|=0已知m,x,y满足条件:(1)2/3(x-5)2+5×(m的绝对值)=0;(2)-2a2b^(y+1)与3b3a2是同类项.求代数式0.75x2y+5m2x-{-7/16x2y+[1/4xy2+(-3/16x2y-3.475xy2)]-6.27xy2}的值.
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![已知m,x,y满足条件:(1)2/3(x-5)的2次方+5|m|=0已知m,x,y满足条件:(1)2/3(x-5)2+5×(m的绝对值)=0;(2)-2a2b^(y+1)与3b3a2是同类项.求代数式0.75x2y+5m2x-{-7/16x2y+[1/4xy2+(-3/16x2y-3.475xy2)]-6.27xy2}的值.](/uploads/image/z/4067299-19-9.jpg?t=%E5%B7%B2%E7%9F%A5m%2Cx%2Cy%E6%BB%A1%E8%B6%B3%E6%9D%A1%E4%BB%B6%EF%BC%9A%EF%BC%881%EF%BC%892%2F3%EF%BC%88x-5%EF%BC%89%E7%9A%842%E6%AC%A1%E6%96%B9%2B5%7Cm%7C%3D0%E5%B7%B2%E7%9F%A5m%2Cx%2Cy%E6%BB%A1%E8%B6%B3%E6%9D%A1%E4%BB%B6%EF%BC%9A%EF%BC%881%EF%BC%892%2F3%28x-5%292%2B5%C3%97%28m%E7%9A%84%E7%BB%9D%E5%AF%B9%E5%80%BC%EF%BC%89%3D0%EF%BC%9B%EF%BC%882%EF%BC%89-2a2b%5E%28y%2B1%29%E4%B8%8E3b3a2%E6%98%AF%E5%90%8C%E7%B1%BB%E9%A1%B9.%E6%B1%82%E4%BB%A3%E6%95%B0%E5%BC%8F0.75x2y%2B5m2x-%7B-7%2F16x2y%2B%5B1%2F4xy2%2B%28-3%2F16x2y-3.475xy2%29%5D-6.27xy2%7D%E7%9A%84%E5%80%BC.)
已知m,x,y满足条件:(1)2/3(x-5)的2次方+5|m|=0已知m,x,y满足条件:(1)2/3(x-5)2+5×(m的绝对值)=0;(2)-2a2b^(y+1)与3b3a2是同类项.求代数式0.75x2y+5m2x-{-7/16x2y+[1/4xy2+(-3/16x2y-3.475xy2)]-6.27xy2}的值.
已知m,x,y满足条件:(1)2/3(x-5)的2次方+5|m|=0
已知m,x,y满足条件:(1)2/3(x-5)2+5×(m的绝对值)=0;(2)-2a2b^(y+1)与3b3a2是同类项.求代数式0.75x2y+5m2x-{-7/16x2y+[1/4xy2+(-3/16x2y-3.475xy2)]-6.27xy2}的值.
已知m,x,y满足条件:(1)2/3(x-5)的2次方+5|m|=0已知m,x,y满足条件:(1)2/3(x-5)2+5×(m的绝对值)=0;(2)-2a2b^(y+1)与3b3a2是同类项.求代数式0.75x2y+5m2x-{-7/16x2y+[1/4xy2+(-3/16x2y-3.475xy2)]-6.27xy2}的值.
说实话 你的等式给得我都看得不怎么懂 只能蒙着来了
根据(1)可知x=5 m=0
(2)可知y=2所以等式的结果是7.85
①2/3(x-5)²+5│m│=0 则 x=5 m=0
②-2a²b的y+1次方与3a²b³是同类项,则 y+1=3 y=2
-{-7/16x²y+[-1/4xy²+(-3/16x²y-3.475xy²)]-6.275xy²}+0.375x²y+5m²x
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①2/3(x-5)²+5│m│=0 则 x=5 m=0
②-2a²b的y+1次方与3a²b³是同类项,则 y+1=3 y=2
-{-7/16x²y+[-1/4xy²+(-3/16x²y-3.475xy²)]-6.275xy²}+0.375x²y+5m²x
=-{-7/16x²y+[-1/4xy²-3/16x²y-3.475xy²]-6.275xy²}+0.375x²y m=0
=-{-7/16x²y-1/4xy²-3/16x²y-3.475xy²-6.275xy²}+0.375x²y
=-{-10/16x²y-10xy²}+0.375x²y
=0.625x²y+10xy²+0.375x²y
=x^2y+10xy^2
=50+200
=250
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