Still Confused?

Try reviewing these fundamentals first.

- Home
- College Algebra
- Quadratic Equations and Inequalities

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 Lesson14:18
- Lesson: 18:30
- Lesson: 27:31

Basic concepts: Solving quadratic equations by factoring, Solving quadratic equations by completing the square, Solving quadratic equations using the quadratic formula,

Related concepts: Graphing quadratic inequalities in two variables, Graphing systems of quadratic inequalities,

- Introduction

Solve:

i) $x^2+2x-15=0$

ii) $x^2+2x-15\leq0$

iii) $x^2+2x-15$ $>$ $0$

- 1.

Solve:

i) $-2x^2+x+3=0$

ii) $-2x^2+x+3 \ge 0$

iii) $-2x^2+x+3$ < $0$

- 2.

Solve:

i) $x^2-10x+25=0$

ii) $x^2-10x+25$ > $0$

iii) $x^2-10x+25$ < $0$

iv) $x^2-10x+25 \leq 0$

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.

Get Started Now