12
I assume that "I" is a variable2+5i+6+3i7i+6+3i10i+616i is the answer
21
7 + 7 + 7 = 21
Not in real numbers. It can be factored to (x - 5i)(x + 5i) where i is the square root of negative one.
The conjugate is 7-5i
12
1/(3+5i)=(3-5i)/((3+5i)(3-5i))=(3-5i)/(9+25)=(3-5i)/34
9-5i
1/(2 + 5i) (multiply both the numerator and the denominator by 2 - 5i)= 1(2 - 5i)/(2 + 5i)(2 - 5i)= (2 - 5i)/(4 - 25i2) (substitute -1 for i2)= (2 - 5i)/(4 + 25)= (2 - 5i)/29= 2/29 - (5/29)i
I assume that "I" is a variable2+5i+6+3i7i+6+3i10i+616i is the answer
(x-5i)(x+5i)
To find the complex conjugate change the sign of the imaginary part: For 11 + 5i the complex conjugate is 11 - 5i.
21
7 plus 7 divided by 7 plus 7 times 7 minus 7 is equal to 50.
7 + 7 + 7 = 21
Not in real numbers. It can be factored to (x - 5i)(x + 5i) where i is the square root of negative one.