Solving quadratic inequalities

Intro Lesson
14:18
Lesson: 1
8:30
Lesson: 2
7:31

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Solving quadratic inequalities

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

Lessons

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

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