(7*1/2)^2-(-1/2)^2= eching

$$( 7 \cdot \frac { 1 } { 2 } ) ^ { 2 } - ( - \frac { 1 } { 2 } ) ^ { 2 } =$$

Baholash

$$12$$

Yechim qadamlari

\frac{7}{2} hosil qilish uchun 7 va \frac{1}{2} ni ko'paytirish.

$$\left(\frac{7}{2}\right)^{2}-\left(-\frac{1}{2}\right)^{2}$$

2 daraja ko‘rsatkichini \frac{7}{2} ga hisoblang va \frac{49}{4} ni qiymatni oling.

$$\frac{49}{4}-\left(-\frac{1}{2}\right)^{2}$$

2 daraja ko‘rsatkichini -\frac{1}{2} ga hisoblang va \frac{1}{4} ni qiymatni oling.

$$\frac{49}{4}-\frac{1}{4}$$

12 olish uchun \frac{49}{4} dan \frac{1}{4} ni ayirish.

$$12$$

Omil

$$2^{2}\times 3$$