Upload
others
View
0
Download
0
Embed Size (px)
Citation preview
7.4 Adding & Subtracting Rational Expressions with work
1
Feb 1511:02 AM
7.4 Adding and Subtracting Rational Expressions
Adding and subtracting rational expressions is similar to adding and subtracting fractions. You MUST have a COMMON DENOMINATOR.
Things like x ‐ 2 or 3x + 4 are considered factors of the COMMON DENOMINATOR.
Feb 103:35 PM
Find the LCD of the following rational expressions.
and and
andand
LCD: _________ LCD: _________
LCD: _________ LCD: _________
7.4 Adding & Subtracting Rational Expressions with work
2
Layer reveal
Find the LCD PullPull
Multiply each rational expression (on top and bottom) by whatever is MISSING to have the common denominator.
PullPull
Add (or subtract) the numerators by combining like terms. If you are subtracting, then ALL the signs in the numerator of the subtracted expression will change.
PullPull
Factor and simplify if necessary. PullPull
Factor each denominator, if possible. PullPull
To add and subtract rational expressions:
Watch videoWatch video
Feb 103:39 PM
Add and Subtract rational expressions:
7.4 Adding & Subtracting Rational Expressions with work
3
Feb 103:49 PM
Feb 103:49 PM
7.4 Adding & Subtracting Rational Expressions with work
4
Apr 1310:54 AM
HOMEWORK DAY ONE
Mar 17:19 PM
Simplify the following rational expressions.
7.4 DAY TWO: + & Rational Expressions
7.4 Adding & Subtracting Rational Expressions with work
5
Mar 17:19 PM
Mar 17:20 PM
7.4 Adding & Subtracting Rational Expressions with work
6
Mar 202:41 PM
Complex Fractions
Apr 161:22 PM
7.4 Adding & Subtracting Rational Expressions with work
7
Mar 202:42 PM
Practice:
Apr 161:22 PM
7.4 Adding & Subtracting Rational Expressions with work
8
Mar 17:20 PM
HW: pg. 388:
A: 17, 25, 27, 29, 37, 43, 49, 51, 55, 58 61
B: 1, 7, 15, 17, 23, 25, 27, 29, 37, 43, 49, 58 61
C: 1 43 (o), 58 61
ANSWERS:58. (1, 7) and (2, 10)
60. no solution