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Popular >

simplify (4+4i)*(-2-5i)

Solution

simplify

(4 + 4 i) \cdot (- 2 - 5 i)

Solution

12 - 28 i

Solution steps

(4 + 4 i) (- 2 - 5 i)

Apply complex arithmetic rule:

(a + bi) (c + d i) = (a c - b d) + (a d + b c) i

= (4 (- 2) - 4 (- 5)) + (4 (- 5) + 4 (- 2)) i

Simplify

(4 (- 2) - 4 (- 5)) + (4 (- 5) + 4 (- 2)) i : 12 - 28 i

= 12 - 28 i

Popular Examples

2(3x+1)<= 20\land 4(x-1)<2

2 (3 x + 1) \leq 20 and 4 (x - 1) < 2

simplify (m-2)/(m^2-5m+6)simplify

\frac{m - 2}{m ^{2} - 5 m + 6}

19 - \frac{5}{2} x = 34

21 r - 3 = 3 (4 - 23 r)

factor 6x^2-3x+12 factor

6 x^{2} - 3 x + 12

Frequently Asked Questions (FAQ)

What is (4+4i)*(-2-5i) ?
The solution to (4+4i)*(-2-5i) is 12-28i