Math 100 Test 3 5 pts each March 13, 2003
Multiply
1.
(x + 5)2
2.
(2y2 - 3)2
3.
(y - 7)(y + 7)
Factor:
4.
y2 - 25
5.
16x4 - 81
6.
2x2 + 6x
7.
4(x - y) - w(x - y)
8.
3 x + 3 z - a x - a z
9.
x2 a - b + b x2 - a
10. x3 - x
11.
15x2 + 4 xy - 4y2
12.
2y2 + yt - 6t2
13.
Solve H(a + b) = 2ab for a
14.
solve for f: d1
d2 = fd2 + fd1
15. Solve for r. 