The problem asks to multiply two complex numbers, $(2 + 5i)$ and $(3 - 2i)$.

AlgebraComplex NumbersMultiplication
2025/3/7

1. Problem Description

The problem asks to multiply two complex numbers, (2+5i)(2 + 5i) and (32i)(3 - 2i).

2. Solution Steps

We need to multiply the two complex numbers using the distributive property (FOIL method).
(a+bi)(c+di)=ac+adi+bci+bdi2(a + bi)(c + di) = ac + adi + bci + bdi^2
Recall that i2=1i^2 = -1.
First, multiply the first terms:
23=62 * 3 = 6
Second, multiply the outer terms:
2(2i)=4i2 * (-2i) = -4i
Third, multiply the inner terms:
5i3=15i5i * 3 = 15i
Fourth, multiply the last terms:
5i(2i)=10i25i * (-2i) = -10i^2
So we have:
64i+15i10i26 - 4i + 15i - 10i^2
Since i2=1i^2 = -1, we can replace 10i2-10i^2 with 10(1)=10-10 * (-1) = 10.
Then the expression becomes:
64i+15i+106 - 4i + 15i + 10
Combine the real parts: 6+10=166 + 10 = 16
Combine the imaginary parts: 4i+15i=11i-4i + 15i = 11i
So we have: 16+11i16 + 11i

3. Final Answer

16+11i16 + 11i

Related problems in "Algebra"

We are asked to solve four problems: (a) Expand and simplify the expression $6(2y-3) - 5(y+1)$. (b) ...

Algebraic SimplificationExponentsDifference of SquaresEquationsFactorization
2025/7/22

We are asked to simplify the expression $(a^{-2}b^3)^{-2}$, writing the answer with positive powers.

ExponentsSimplificationPower Rules
2025/7/22

A group of children bought a certain number of apples. If each apple is cut into 4 equal pieces and ...

System of EquationsWord Problem
2025/7/21

The problem asks to simplify the expression $\frac{x+1}{y} \div \frac{2(x+1)}{x}$.

Algebraic simplificationFractionsVariable expressions
2025/7/21

A group of children bought some apples. If each apple is divided into 4 equal pieces and 1 piece is ...

Linear EquationsSystems of EquationsWord Problem
2025/7/21

We need to find the value of the expression $6 + \log_b(\frac{1}{b^3}) + \log_b(\sqrt{b})$.

LogarithmsExponentsSimplification
2025/7/20

We need to solve the following equation for $y$: $\frac{y-1}{3} = \frac{2y+1}{5}$

Linear EquationsSolving EquationsAlgebraic Manipulation
2025/7/20

We are given the equation $\frac{3x}{2} = \frac{x-1}{7}$ and need to solve for $x$.

Linear EquationsSolving EquationsAlgebraic Manipulation
2025/7/20

The problem is to solve the equation $\frac{m}{5} = \frac{m+5}{10}$ for $m$.

Linear EquationsSolving EquationsVariables
2025/7/20

The problem is to solve the linear equation $\frac{2x}{5} = 3x + 1$ for $x$.

Linear EquationsEquation SolvingVariable Isolation
2025/7/20