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Solve and check each of the equations.$4-x(x-3)=0$

$x=-1$ or 4

Algebra

Chapter 1

THE INTEGERS

Section 7

Quadratic Equations with Integral Roots

The Integers

Equations and Inequalities

Polynomials

Missouri State University

McMaster University

Baylor University

University of Michigan - Ann Arbor

Lectures

01:32

In mathematics, the absolu…

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Solve each equation, and c…

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Solve each equation.$$…

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Solve each equation. Check…

in this question will solve it and check this equation. So but we want to do first is just most by this exit. So we have four minus X squared plus three x equal zero. And I think it's easier to see the X squared terminus positive. So multiple sides by negative one. So we have X squared minus three X minus four equals zero x factor that so we'll have X minus four times X plus one. Checking real quick. If that gives us the desired result, will have X squared plus X minus for X, which is this negative three X and then minus four. So we have that. Our answer is going to be X equals four and X equals negative one. So let's check that negative one. If we plug it in, we'll get four minus. We'll get this negative one times negative one minus three. So we'll have four minus negative four, which does equal zero. And then if we plug and four, we get four minus this four times four minus three, which was just four. And that will equal. Oh, am I bad? This will give us positive. So that would be actually four plus four right there about. I didn't correctly subtracts not before minus four, which equals zero. And this is also for months for which will be zero.

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