k^2+15k+56/3k+21divk+8/10 eching

$$\frac { k ^ { 2 } + 15 k + 56 } { 3 k + 21 } \div \frac { k + 8 } { 10 }$$

Baholash

$$\frac{10}{3}\approx 3,333333333$$

Qisqa yechim qadamlari

\frac{k^{2}+15k+56}{3k+21} ni \frac{k+8}{10} ga bo'lish \frac{k^{2}+15k+56}{3k+21} ga k'paytirish \frac{k+8}{10} ga qaytarish.

$$\frac{\left(k^{2}+15k+56\right)\times 10}{\left(3k+21\right)\left(k+8\right)}$$

Hali faktorlanmagan ifodalarni faktorlang.

$$\frac{10\left(k+7\right)\left(k+8\right)}{3\left(k+7\right)\left(k+8\right)}$$

Surat va maxrajdagi ikkala \left(k+7\right)\left(k+8\right) ni qisqartiring.

$$\frac{10}{3}$$

Omil

$$\frac{2 \cdot 5}{3} = 3\frac{1}{3} = 3,3333333333333335$$