3x-1/2x 的五次方怎么化简
问题描述:
3x-1/2x 的五次方怎么化简
答
(3x-1/2x)²=9x²+1/(4x²)-3( 3x-1/2x)^4 = (3x-1/2x)²×(3x-1/2x)²=[9x²+1/(4x²)-3]²=[9x²+1/(4x²)]²+3²-2×3×[9x²+1/(4x²)]=81x^4+1...
3x-1/2x 的五次方怎么化简
(3x-1/2x)²=9x²+1/(4x²)-3( 3x-1/2x)^4 = (3x-1/2x)²×(3x-1/2x)²=[9x²+1/(4x²)-3]²=[9x²+1/(4x²)]²+3²-2×3×[9x²+1/(4x²)]=81x^4+1...