Question

Solve 1/a²b-1/ab²≠0
=(A²-b²)/ab²-(a²-b²)/a²b
= ?

Answer 1

Answer:

$\frac{1}{ {a}^{2}b } - \frac{1}{ab {}^{2} }$

is not equal to 0

$\frac{ {a}^{2} - {b}^{2} }{a {b}^{2} } - \frac{ {a}^{2} - {b}^{2} }{ {a}^{2} b} \\ = \frac{a( {a}^{2} - {b}^{2}) - b( {a}^{2} - {b}^{2}) }{a {}^{2} b {}^{2}} \\ = \frac{( {a}^{2} - {b}^{2})(a - b) }{ {a}^{2} {b}^{2} } \\ = \frac{ {a}^{3} - a {b}^{2} - {a}^{2} b + {b}^{3} }{ {a}^{2} {b}^{2} }$