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Still Confused?

Try reviewing these fundamentals first.

Still Confused?

Try reviewing these fundamentals first.

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Get Started Now- Lesson: 114:18
- Lesson: 28:30
- Lesson: 37:31

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,

- 1.

Solve:

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

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

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

- 2.

Solve:

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

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

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

- 3.

Solve:

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

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

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

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

5.

Quadratic Equations and Inequalities

5.1

Solving quadratic equations by factorising

5.2

Solving quadratic equations by completing the square

5.3

Using quadratic formula to solve quadratic equations

5.4

Nature of roots of quadratic equations: The discriminant

5.5

Applications of quadratic equations

5.6

Solving quadratic inequalities

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