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Find the unknown.$$x^{2}+16=7$$

$$\pm 3 i$$

Algebra

Chapter 0

Reviewing the Basics

Section 2

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

Equations and Inequalities

Oregon State University

McMaster University

Lectures

00:32

Find the unknown.$$x^{…

01:43

Find the unknown.$$(x-…

00:50

00:33

01:33

Solve the equation. $$16+x…

Solve.$$x^{2}=16

01:09

Find the unknown.$$17 …

02:13

Solve each equation.$$…

01:00

Find the unknown.$$5 x…

00:56

because it's clear. So when you read here, So here we're going to calculate X for the equation. X Square plus 16 is equal to seven. We're going to first attract 16 on both sides to get explore on one side and the numerical value on the other, which is negative. Nine. Let's take a look on the right here where we see that when we calculate X from X square is equal to negative one, we get X is equal to plus minus I when we square with both sides were going to do the same on the problem on the left that we get X square square root is equal to square root of negative one times the square root of nine. Then we get X is equal to three plus or minus three. I

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