Question

find the complex conjugate of (2+5i) (-4+6i)

Answer 1

z = -8 + 12i - 9i + 11

z = 3 - 3i

ž = 3 + 3i

Answer 2

Answer:

The conjugate of the number is $8i-38$

Step-by-step explanation:

Given : Complex number $(2+5i) (-4+6i)$

To find : The complex conjugate of the given complex number ?

Solution :

First we solve the given complex number,

$(2+5i) (-4+6i)$

$=-8+12i-20i+30i^2$

$=-8-8i+30(-1)$

$=-8-8i-30$

$=-8i-38$

The complex conjugate of a complex number is the number with an equal real part and an imaginary part equal in magnitude but opposite in sign.

The conjugate of the number is $8i-38$