10.9.2: Practice Test
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Practice Test
In the following exercises, simplify each expression.
(5a2+2a−12)+(9a2+8a−4)
(10x2−3x+5)−(4x2−6)
(−34)3
n·n4
(10p3q5)2
(8xy3)(−6x4y6)
4u(u2−9u+1)
(s+8)(s+9)
(m+3)(7m−2)
(11a−6)(5a−1)
(n−8)(n2−4n+11)
(4a+9b)(6a−5b)
5658
(x3·x9x5)2
(47a18b23c5)0
24r3s6r2s7
8y2−16y+204y
(15xy3−35x2y)÷5xy
4−1
(2y)−3
p−3·p−8
x4x−5
In the following exercises, factor the greatest common factor from each polynomial.
80a3+120a2+40a
−6x2−30x
According to www.cleanair.org, the amount of trash generated in the US in one year averages out to 112,000 pounds of trash per person. Write this number in scientific notation.
Convert 5.25×10−4 to decimal form.
In the following exercises, simplify, and write your answer in decimal form.
(2.4×108)(2×10−5)
9×1043×10−1
A hiker drops a pebble from a bridge 240 feet above a canyon. The polynomial −16t2+240 gives the height of the pebble t seconds a after it was dropped. Find the height when t=3.