en

English

Español

Português

Français

Deutsch

Italiano

Русский

中文(简体)

한국어

日本語

Tiếng Việt

עברית

العربية

Popular >

simplify (-2i)(2-7i)

Solution

simplify

(- 2 i) (2 - 7 i)

Solution

- 14 - 4 i

Solution steps

(- 2 i) (2 - 7 i)

Apply rule:

(- a) = - a

(- 2 i) = - 2 i

= - 2 i (2 - 7 i)

Apply the distributive law:

a (b - c) = ab - a c

- 2 i (2 - 7 i) = - 2 i 2 - (- 2 i) \cdot 7 i

= - 2 i 2 - (- 2 i) \cdot 7 i

Simplify

- 2 i 2 - (- 2 i) \cdot 7 i : - 4 i - 14

= - 4 i - 14

Rewrite in standard complex form:

- 14 - 4 i

= - 14 - 4 i

Popular Examples

\frac{31}{16}

simplify (5+3i)(2+9i)simplify

(5 + 3 i) (2 + 9 i)

simplify 5\times 11 simplify

5 \times 11

simplify-4/5+1/3 simplify

- \frac{4}{5} + \frac{1}{3}

factor 12x^2+24x factor

12 x^{2} + 24 x

Frequently Asked Questions (FAQ)

What is (-2i)(2-7i) ?
The solution to (-2i)(2-7i) is -14-4i