Transcript Put your name on foldable - Phoenix Union High School

Radical Unit
Rationalizing the Denominator
Medina
1
Rationalizing the Denominator
Rule 1: There are NO perfect squares
underneath the radical symbol.
Rule 2: There are NO fractions underneath
the radical symbol.
Rule 3: There are NO radicals in the
denominator.
Rule 4: There are NO negatives underneath a
square root.
Medina
2
Rationalizing the Denominator
Irrational
Rational
Numbers can either be rational or irrational
Numbers that make sense
Numbers that don’t make
sense
Make number into a
decimal if it stops or has
a pattern (repeating
decimal) it’s rational
Make the number into a
decimal, if it keeps going
and going without a pattern
it’s irrational
4
8
Medina
3
Rationalizing the Denominator
Rationalizing the
denominator is the
process of
converting a
irrational number
into a rational
number.
2 •
3
3•
3
2 3
9
2 3
3
Rationalizing the Denominator
5 •
2
2•
2
5 2
4
5 2
2
Rationalizing the Denominator
4•
3
3•
3
3 4
3
12
9
2 3
3
Rationalizing the Denominator
2
3
6
2• 3
9
3• 3
6
3