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)$40-10x^2=0$

15.

Quadratic Equations and Inequalities

15.1

Solving quadratic equations by factorising

15.2

Solving quadratic equations by completing the square

15.3

Using quadratic formula to solve quadratic equations

15.4

Nature of roots of quadratic equations: The discriminant

15.5

Applications of quadratic equations

15.6

Solving quadratic inequalities

We have over 1340 practice questions in Secondary 4 Maths for you to master.

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