7.3 Binomial Radical Expressions
If we had no winter, the spring would not be so
pleasant: if we did not sometimes taste of adversity,
prosperity would not be so welcome.
Adding and Subtracting Radicals
Like radicals are radical expressions that have the same
index and the same radicand.
Add or subtract if possible.
Ex1) 8 3 y  5 3 y
Ex2) 4 7  4 8
Ex3) 5 3  11 3
Ex4) 8 3 5  2 4 5
Ex5) 7 xy  3 xy
Simplifying Before + and Ex6) 3 20  45  4 80
Ex7) 4 75  3 12  2 48
Multiply


Ex8) 2  4 3 1  5 3



Ex9) 2 3  3 5

Conjugates: Ex10) 3  5 2 3  5 2


2
Divide (Rationalize the Denominator)
4 2
Ex11)
1 2
2 3
Ex12)
4 3
7.3 Binomial Radical Expressions
HW: #1 - 43 odd
If we had no winter, the spring would not be so
pleasant: if we did not sometimes taste of adversity,
prosperity would not be so welcome.