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

$$\pm 7$$

Algebra

Chapter 0

Reviewing the Basics

Section 2

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

Equations and Inequalities

McMaster University

Harvey Mudd College

Lectures

01:05

Find the unknown.$$y^{…

01:45

Find the unknown.$$(2 …

00:36

Find the unknown.$$2 y…

00:24

01:50

Find the unknown.$$(4 …

01:29

Find the unknown.$$6 y…

01:58

Find the unknown.$$(6 …

Find the unknown.$$(y-…

01:59

02:26

Find the unknown.$$\fr…

00:27

Solve the equation or writ…

00:39

Solve by taking square roo…

01:26

Use the Square Root Proper…

00:41

Solve each equation by usi…

01:07

So when you read here So we're going to find for why in the equation why square minus 49 equals zero. So first thing we're going to do is we're going to move the 49 to the other side by adding 49 on both sides of the equation. So what you do on one side, you always due to the other. So we get why square is equal to 49 and then we're going to square root both sides. Let me get why is equal to plus or minus seven.

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