Math Problem Statement

Dacă z_{1} = 2 - 3i şi z_{2} = 1 + 3i atunci |z_{1} + z_{2}| + 2z_{1} - z_{2}

Solution

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Math Problem Analysis

Mathematical Concepts

Complex Numbers
Modulus of Complex Numbers
Addition and Subtraction of Complex Numbers

Formulas

z_1 + z_2 = (a + bi) + (c + di) = (a + c) + (b + d)i
|z| = sqrt(a^2 + b^2) for z = a + bi
Scalar multiplication of complex numbers: k(z) = k(a + bi) = ka + kbi

Theorems

Modulus Theorem for Complex Numbers

Suitable Grade Level

Grades 10-12