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8-2 Skills Practice Adding and Subtracting Rational Expressions
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8-2 Skills Practice Adding and Subtracting Rational Expressions
8-2 Skills Practice. Adding and Subtracting Rational Expressions. Find the LCM of each set of polynomials. 1. 12c, 6c2d. 2. 18a3bc2, 24b2c2. 3. 2x - 6...
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NAME
DATE
8-2
PERIOD
Skills Practice Adding and Subtracting Rational Expressions
Find the LCM of each set of polynomials.
12c2d
1. 12c, 6c2d
2. 18a3bc2, 24b2c2
72a3b2c2
3. 2x - 6, x - 3 2(x - 3)
4. 5a, a - 1
5. t2 - 25, t + 5 (t + 5)(t - 5)
6. x2 - 3x - 4, x + 1 (x - 4)(x + 1)
5a(a - 1)
Simplify each expression. 8p r
2c + 5 2c - 7 9. − +4 − 3 3
Copyright © Glencoe/McGraw-Hill, a division of The McGraw-Hill Companies, Inc.
5y
5yz
2 3 13. − -− a+2
2a
a-6 − 2a(a + 2)
3 2 15. − -− 2 w-3
w -9
k k 17. − -− k-n
n-k
3w + 7 (w - 3)(w + 3)
−
2k − k-n
1 x 19. − +− 2 x + 2x + 1
x+1
2n + 2 n 21. − + − 2 n-3
n - 2n - 3
x2 + x + 1 − (x + 1)2
7h + 3g 4gh
7 3 12. − +− 2 4gh
− 2
4h
5 2 14. − -−
15bd - 6b - 2d − 3bd(3b + d)
3t 5 16. − +−
5 - 3t −
z+4 4z 18. − +−
5z2 + 4z - 16 − (z - 4)(z + 1)
3b + d
2-x
z-4
3bd
x-2
z+1
x-2
2x + 1 4 20. − - − 2 x-5
x - 3x - 10
2x2 + 5x - 2 (x - 5)(x + 2)
−
3 2 22. − - − 2 2 y + y - 12
n+2 n-3
y + 6y + 8
y +12 (y + 4)(y - 3)(y + 2)
−
Chapter 8
2 + 5m2 mp
− 2
mp
− 2
8p r
4p r
2 5 10. − +− 2 p
12z - 2y 5y z
12 2 11. − -− 2
13 − 2
3 5 8. − +− 2 2
− xy
Lesson 8-2
5x + 3y
3 5 7. − x +− y
−− 13
Glencoe Algebra 2
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