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15 questions
Simplify: x4y15x8y12
y3x4
y3x12
x12y27
x4y3
Simplify: 20a5c45a3c10
a24c6
41a2c6
4a21c6
4c61a2
Simplify: x2−49x2+6x−7
x+7x−1
x+7x+1
x−7x−1
x−7x+1
Which of the following is NOT a rational algebraic expression?
x3
6a+4
x2+2xy
5
Give the domain of y−2y+2
all real numbers except −1
all real numbers except 1
all real numbers except −2
all real numbers except 2
z2+5z8−y
Give the values for which the given rational expression is undefined?
z=0 and z=5
z =0 and z=−5
z=0 and z=−1
z=0 and z=1
x+3x+x+33=
x2
x + 33x
1
3x3x
x2 − 163x + 4 − x2−162x=
1
x2−16x+4
x−41
x+41
4 / 7v2
4 / 7v
20 / 35v
20 / 35v2
7(r + 2)/ (r + 2)
(r - 8) / (r + 2)
(r + 2) / 7
(r - 8) / 7
A rational expression is said to be in lowest terms when its numerator and denominator have no common factors other than _____.
1
2
3
4
What is x−2y2yless than 2y−x2x?
x−2y2x+2y
-1
x−2y2x−2y
Divide3v2+12v2−9by v2+4v+3
3v−3
3v+3
(v+3)(v-3)
3
Add:
xx−1
xx2+2
x −1x +1
x −1x+2
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