Examples with solutions for Equations with Absolute Values: Quadratic equation

Exercise #1

x2+4=20 |x^2+4|=20

Video Solution

Answer

x=±4 x=±4

Exercise #2

x2+4=40 |x^2+4|=40

Video Solution

Answer

x=±6 x=±6

Exercise #3

x26x+8=0 |x^2-6x+8|=0

Video Solution

Answer

x=2 x=2 , x=4 x=4

Exercise #4

x211=5 |x^2-11|=5

Video Solution

Answer

Answers a + b