8.9
Factoring Perfect Square Trinomials
To review:
Multiply:
(x + 4) 2
Factor:
x 2 + 8x + 16
16y 2 + 8y + 1
2
9w + 30w + 25
x 4 - 18x2 + 81
Solve the Equations:
x2 + 14x + 49 = 0
25x2 - 20x + 4 = 0
Solve the Equations:
2
2
x = 25
x = 25
2
(y - 6) = 81
2
(x + 6) = 12
a 2 - 20a + 100 = 121
x 2 + 18x + 81 = 8
16x2 + 24x + 9 = 25