8x²·(-3x/4y³)·(-6z/x²y)计算
8x²·(-3x/4y³)·(-6z/x²y)计算
若x-y=6,xy=-8,求代数式(x+y+z)²+(x-y-z)(x-y+z)-2·z(x+y)的值
计算:①-x·(y-x)³·(x-y)的四次方 ②(x-y)²·(y-x)³·(x-y)的
计算:8x/3y·(-3y/2x²)³.
计算:(x+y+z)(-x+y+z)(x-y+z)(x+y-z).
已知实数x、y、z满足丨4x-4y+1丨+1/3√2y+z+(z-½)²=0,求(y+z)·x
计算:(1)(-x²/y)·(-y²/x)³÷(-y/x)的4次方;
设x.y.z满足3x=4y=6z(x.y.z都是指数)求证
(3x²y)³·(-4x)计算
计算 (1)(-3x³y/2z²)²
设x.y.z满足3x=4y=6z(x.y.z都是指数)比较3x.4y.6z的大小
计算:3x-2y- [-4x+(z+3y)]