4n − 2n = 4
2
l3xl = 9
3,-3
w(t) = −2t + 1; Find w(−7)
15
y = −3x + 4
y = 3x − 2
(1,1)
x2 − 7x − 18
(x − 9)(x + 2)
x + 3 − 3 = −6
-6
l-6m l = 30
5,-5
g(x) = 3x − 3; Find g(−6)
-21
y = x + 2
x = −3
(-3,-1)
p 2 − 5 p − 14
(p + 2)( p − 7)
6(6v + 6) − 5 = 1 + 6v
-1
l−2r − 1 l = 11
-6,5
w(a) = a + 3; Find w(a + 4)
a +7
Solve by substitution
y = 4x − 9
y = x − 3
(2,-1)
m2 − 9m + 8
(m − 1)(m − 8)
−4k + 2(5k − 6) = −3k − 39
-3
l v + 8 l − 5 = 2
-1, -15
p(a) = a3 − 5; Find p(x − 4)
x3− 12x2 + 48x − 69
Solve by substitution
4x + 2y = 10
x − y = 13
(6,-7)
x2 − 16x + 63
(x − 9)(x − 7)
−11 + 10( p + 10) = 4 − 5(2p + 11)
-7
5 l 9 − 5n l − 7 = 38
0, 18/5
f (n) = n2 − 2n; Find f (n2 )
n4 − 2n2
Solve by Elimination
6x − 12y = 24
−x − 6y = 4
(2,-1)
2b2 + 17b + 21
(2b + 3)(b + 7)