2X-6/X-2÷(5/X-2-X-2)化简:
孟克楠回答:
原式=2X-6/X-2÷[5-(X^2-4)/X-2]
=2X-6/X-2÷(9-X^2/X-2)
=2X-6/X-2*X-2/9-X^2
=2X-6/9-X^2
=2(X-3)/(3+X)(3-X)
=-2/X+2
相关文章:
2X-6/X-2÷(5/X-2-X-2)化简:
孟克楠回答:
原式=2X-6/X-2÷[5-(X^2-4)/X-2]
=2X-6/X-2÷(9-X^2/X-2)
=2X-6/X-2*X-2/9-X^2
=2X-6/9-X^2
=2(X-3)/(3+X)(3-X)
=-2/X+2