Question

1)38+(-15) 2)-22-(-15) 3)-8*(-25) 4)860:(-43) 5)(-3)³-(-2)²

Answer 1

Ответ:

38+(-15)=-23.

-22-(-15)=7

-8*(-25)=200

860:(-43)=-20

(-3)^3-(-2)^2=(-27)-4= (-31)

Answer 2

Let's solve the expressions one by one:

1. 38 + (-15) The sum of 38 and -15 is: 38 + (-15) = 23

2. -22 - (-15) When subtracting a negative number, it is equivalent to adding its positive counterpart. Therefore: -22 - (-15) = -22 + 15 = -7

3. -8 * (-25) The product of two negative numbers is positive: -8 * (-25) = 200

4. 860 : (-43) Dividing a positive number by a negative number gives a negative result: 860 : (-43) = -20

5. (-3)³ - (-2)² The cubes and squares of negative numbers are positive: (-3)³ - (-2)² = (-27) - 4 = -23

Therefore, the solutions are:

1. 23
2. -7
3. 200
4. -20
5. -23