Still Confused?

Try reviewing these fundamentals first.

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Still Confused?

Try reviewing these fundamentals first.

Still Confused?

Try reviewing these fundamentals first.

Nope, I got it.

That's that last lesson.

Start now and get better math marks!

Get Started NowStart now and get better math marks!

Get Started NowStart now and get better math marks!

Get Started NowStart now and get better math marks!

Get Started Now- Intro Lesson: a4:25
- Intro Lesson: b6:19
- Lesson: 1a6:32
- Lesson: 1b3:37
- Lesson: 2a3:01
- Lesson: 2b3:24
- Lesson: 2c6:21
- Lesson: 2d2:43

Review the chapter on "Factoring" to refresh your memory if you don't quite remember how to factor polynomials. It will definitely help you solve the questions in this lesson!

Basic concepts: Factoring polynomials: $ax^2 + bx + c$, Factoring perfect square trinomials: $(a + b)^2 = a^2 + 2ab + b^2$ or $(a - b)^2 = a^2 - 2ab + b^2$, Find the difference of squares: $(a - b)(a + b) = (a^2 - b^2)$, Solving polynomial equations,

Related concepts: System of linear-quadratic equations, System of quadratic-quadratic equations, Graphing quadratic inequalities in two variables,

Difference of Squares: $a^2-b^2=(a+b)(a-b)$

- Introductiona)Solve by factoring a
*trinomial*: $2x^2-12x+10=0$b)Solve by factoring a*difference of squares*: $25x^2-49=0$ - 1.
**Solve by Factoring a Trinomial**

Solve each equation by factoring.a)$3x^2+x-10=0$b)$7x^2+35=-42x$ - 2.
**Solve by Factoring a Difference of Squares**

Solve each equation by factoring.a)$x^2-36=0$b)$36x^2-25=0$c)$12x^3-75x=0$d)$40-10x^2=0$

18.

Quadratic Equations and Inequalities

18.1

Solving quadratic equations by factorising

18.2

Solving quadratic equations by completing the square

18.3

Using quadratic formula to solve quadratic equations

18.4

Nature of roots of quadratic equations: The discriminant

18.5

Applications of quadratic equations

18.6

Solving quadratic inequalities

We have over 1420 practice questions in College Algebra for you to master.

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