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Find the unknown.$$y^{2}+49=0$$

$$\pm 7 i$$

Algebra

Chapter 0

Reviewing the Basics

Section 2

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

Equations and Inequalities

Missouri State University

Oregon State University

Harvey Mudd College

Lectures

00:36

Find the unknown.$$y^{…

01:45

Find the unknown.$$(2 …

01:50

Find the unknown.$$(4 …

Find the unknown.$$2 y…

00:24

01:58

Find the unknown.$$(y-…

01:29

Find the unknown.$$6 y…

Find the unknown.$$(6 …

02:26

Find the unknown.$$\fr…

01:59

00:27

Solve the equation or writ…

01:26

Use the Square Root Proper…

00:39

Solve by taking square roo…

01:07

because it's clear. So when um right here. So here we're going to solve for a while in the equation Why Square plus 49 is equal to zero. So we want to subtract 49 on both sides. Get why on one side and the numerical while you on the other equals negative 49. So let's take a look on the right here. We're explorers equal to negative one on when we calculate X and we square both of the sides. Yet X is equal to plus minus I where I is a unit imaginary number. So we're going to take the same approach and square both sides here to get square it of Y square is equal to square of one negative one times square of 49 and then we get why is equal to squirt of negative one is plus minus I squirt of 49 seven. So we get plus minus seven. I

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