a-2/a+2-a^2/b eching

$$\frac { a - 2 } { a + 2 } - \frac { a ^ { 2 } } { b }$$

Baholash

$$\frac{-a^{3}-2a^{2}+ab-2b}{b\left(a+2\right)}$$

Qisqa yechim qadamlari

Ifodalarni qo‘shish yoki ayirish uchun ularni yoyib, maxrajlarini bir xil qiling. a+2 va b ning eng kichik umumiy karralisi b\left(a+2\right). \frac{a-2}{a+2} ni \frac{b}{b} marotabaga ko'paytirish. \frac{a^{2}}{b} ni \frac{a+2}{a+2} marotabaga ko'paytirish.

$$\frac{\left(a-2\right)b}{b\left(a+2\right)}-\frac{a^{2}\left(a+2\right)}{b\left(a+2\right)}$$

\frac{\left(a-2\right)b}{b\left(a+2\right)} va \frac{a^{2}\left(a+2\right)}{b\left(a+2\right)} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{\left(a-2\right)b-a^{2}\left(a+2\right)}{b\left(a+2\right)}$$

\left(a-2\right)b-a^{2}\left(a+2\right) ichidagi ko‘paytirishlarni bajaring.

$$\frac{ab-2b-a^{3}-2a^{2}}{b\left(a+2\right)}$$

b\left(a+2\right) ni kengaytirish.

$$\frac{ab-2b-a^{3}-2a^{2}}{ab+2b}$$

Kengaytirish

$$\frac{-a^{3}-2a^{2}+ab-2b}{b\left(a+2\right)}$$

Qisqa yechim qadamlari

Ifodalarni qo‘shish yoki ayirish uchun ularni yoyib, maxrajlarini bir xil qiling. a+2 va b ning eng kichik umumiy karralisi b\left(a+2\right). \frac{a-2}{a+2} ni \frac{b}{b} marotabaga ko'paytirish. \frac{a^{2}}{b} ni \frac{a+2}{a+2} marotabaga ko'paytirish.

$$\frac{\left(a-2\right)b}{b\left(a+2\right)}-\frac{a^{2}\left(a+2\right)}{b\left(a+2\right)}$$

\frac{\left(a-2\right)b}{b\left(a+2\right)} va \frac{a^{2}\left(a+2\right)}{b\left(a+2\right)} da bir xil maxraji bor, ularning suratini ayirish orqali ayiring.

$$\frac{\left(a-2\right)b-a^{2}\left(a+2\right)}{b\left(a+2\right)}$$

\left(a-2\right)b-a^{2}\left(a+2\right) ichidagi ko‘paytirishlarni bajaring.

$$\frac{ab-2b-a^{3}-2a^{2}}{b\left(a+2\right)}$$

b\left(a+2\right) ni kengaytirish.

$$\frac{ab-2b-a^{3}-2a^{2}}{ab+2b}$$