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Find the unknown.$$x^{2}+25=0$$

$$\pm 5 i$$

Algebra

Chapter 0

Reviewing the Basics

Section 2

Solving Equations of the Form $a x^{2}-b=0$

Equations and Inequalities

Missouri State University

Campbell University

Harvey Mudd College

Baylor University

Lectures

01:57

Find the unknown.$$(3 …

00:42

Find the unknown.$$x^{…

01:24

Find the unknown.$$(x+…

00:21

Solve.$x^{2}+25=0$

01:11

0:00

Solve each equation.$$…

01:07

Solve.$$25 x^{2}-4…

00:41

01:03

Solve the equation. If the…

00:56

00:52

Solve the equation by fact…

00:35

Use factoring to solve the…

00:51

Solve.$$(x+2)^{2}=…

00:34

01:36

Solve.

$$25 x^…

That's Claris. When you right here. So here, we're going to find for X in this equation. First, we want to subtract 25 on both sides to get X Square is equal to negative. 25 we before we continue. Um, no, that X square equal to negative one. To find X, we get X is equal to plus minus I where I is a unit of an imaginary number. So we're going to apply the same for X square is equal to negative 25 spirit. Both sides coming. It X is equal to plus minus five. We know negative one. This is practically 25 times negative. One square, this square it that this becomes five plus minus five. And this becomes plus minus I so it's plus minus five. Ah.

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