Question

0,3036:(-21,7)-(-13,5)= c объяснением плиз​

Answer 1

Ответ:

13.52

Объяснение:

изначально мы делим потом 2 - дают +

И получаем ответ

Answer 2

To solve the expression 0.3036: (-21,7) - (-13,5) and find the value of 'c,' let's break it down step by step.

1. 0.3036: (-21,7): In this part of the expression, the colon ":" represents division. So, you need to divide the number 0.3036 by the complex number (-21,7).

The division of a complex number by another complex number involves multiplying both the numerator and denominator by the complex conjugate of the denominator to eliminate the imaginary part in the denominator. The complex conjugate of (-21,7) is (-21,-7).

So the division becomes: 0.3036 / (-21,7) = (0.3036 * (-21,-7)) / ((-21,7) * (-21,-7))

2. (-21,7) * (-21,-7): To multiply two complex numbers, you can use the distributive property, i.e., (a + bi)(c + di) = ac + adi + bci + bdi^2. In the case of complex numbers, i^2 is equal to -1.

(-21,7) * (-21,-7) = (-21 * -21) + (-21 * -7)i + (7 * -21)i + (7 * -7)(-1) = 441 + 147i - 147i - 49 = 392

So the denominator becomes (392).

3. Now, the expression becomes: 0.3036 / (392) = c

To find the value of 'c,' perform the division:

c = 0.3036 / 392 c ≈ 0.00077449

Therefore, the value of 'c' is approximately 0.00077449.