Question

1) 2 * (-3)² 2)-5*(-2)³ 3) - 1/2 * (-4)² 4) - 2/3 * (-3)²​

Answer 1

Ответ:

1)2×9=18

2)-5×(-8)=40

3)-1/2×16=-8

-2/3×9=-6

Answer 2

Ответ:

1)2*(-3)²=18   2)-5*(-2)³=40  3)-1/2*(-4)²=-8  4)- 2/3 * (-3)²​=-6

Объяснение:

1) -3²=9 9*2=18

2) -5*(-2)³=(-2)³=-8*-5=40

3) -1/2*(-4)²=(-4)²=16*(-1/2)=-8

4) -2/3*(-3)²=(-3)²=9*(-2/3)=(-2/3)*9=-6

Answer 3

Let's calculate each of these expressions step by step:

1. $2 \cdot (-3)^2$

First, square -3:

$(-3)^2 = 9$

Now, multiply by 2:

$2 \cdot 9 = 18$

So, $2 \cdot (-3)^2 = 18$

2. $-5 \cdot (-2)^3$

First, cube -2:

$(-2)^3 = -8$

Now, multiply by -5:

$-5 \cdot (-8) = 40$

So, $-5 \cdot (-2)^3 = 40$

3. $-\frac{1}{2} \cdot (-4)^2$

First, square -4:

$(-4)^2 = 16$

Now, multiply by $-\frac{1}{2}$:

$-\frac{1}{2} \cdot 16 = -8$

So, $-\frac{1}{2} \cdot (-4)^2 = -8$

4. $-\frac{2}{3} \cdot (-3)^2$

First, square -3:

$(-3)^2 = 9$

Now, multiply by $-\frac{2}{3}$:

$-\frac{2}{3} \cdot 9 = -6$

So, $-\frac{2}{3} \cdot (-3)^2 = -6$

Here are the results for each expression:

1. $2 \cdot (-3)^2 = 18$
2. $-5 \cdot (-2)^3 = 40$
3. $-\frac{1}{2} \cdot (-4)^2 = -8$
4. $-\frac{2}{3} \cdot (-3)^2 = -6$