Question

1)8,4-9,8 2)-5,7-3,4 3)14,8-(-11,4) 4)-5,5-(-9,8)

Answer 1

Ответ:

Пошаговое объяснение:

1)8,4-9,8 = - 1,4

2)-5,7-3,4= - 9,1

3)14,8-(-11,4) = 14,8+11,4 = 26,2

4)-5,5-(-9,8) = - 5,5 +9,8 = 4,3

Answer 2

Ответ:

1) -1,4

2) -9,1

3) 26,2

4) 4,3

Answer 3

To clarify, the expressions you provided appear to be in the format of "a, b - c, d". If that is correct, each expression represents the subtraction of two numbers: (a, b) - (c, d).

Let's evaluate each expression:

1. (8, 4) - (9, 8): To subtract complex numbers, you subtract their real parts and their imaginary parts separately. Real part: 8 - 9 = -1 Imaginary part: 4 - 8 = -4 Therefore, (8, 4) - (9, 8) = (-1, -4).

2. (-5, 7) - (3, 4): Real part: -5 - 3 = -8 Imaginary part: 7 - 4 = 3 Thus, (-5, 7) - (3, 4) = (-8, 3).

3. (14, 8) - (-11, 4): Remember that subtracting a negative number is equivalent to adding its positive counterpart. Real part: 14 - (-11) = 14 + 11 = 25 Imaginary part: 8 - 4 = 4 Hence, (14, 8) - (-11, 4) = (25, 4).

4. (-5, 5) - (-9, 8): Real part: -5 - (-9) = -5 + 9 = 4 Imaginary part: 5 - 8 = -3 Therefore, (-5, 5) - (-9, 8) = (4, -3).

Please note that the above calculations assume that the expressions are written in the format (real part, imaginary part).