2x²/3y²×5y/6x÷10y/21x^2
问题描述:
2x²/3y²×5y/6x÷10y/21x^2
答
2x²/3y²×5y/6x÷10y/(21x²)
=2x²/(3y²)×(5y/6x)×(21x²)/(10y)
=7(x^4)y/(6xy³)
=7x³/(6y²)