Question

通分问题（1）3t/4t-6,t+1/4t平方-9（2）3x/x平方-2x,2x+1/4-x平方,3/2x平方+4x

Answer 1

(1)3t/4t-6=(3t-24t)/4t=-21t/4t=-21/4

t+1/4t^2-9=(4t^3+1-4t^2)/4t^2

(2)3x/x^2-2x=(3x-2x^3)/x^2

2x+1/4-x^2=(8x+1-4x^2)/4

3/2x^2+4x=(8x^3+3)/2x^2