Jan 4
Agenda
1. Turn in hw 2. Geometry Warmup NOW­ circumference­ get a calculator
3. Go over hw answers­ correct your hw
4. Learn difference of two squares and practice
NO HW
2. Dorothy ran 6 times around a circular track that has a diameter of 47 m. Approximately how far did she run? Use π = 3.14 and round your answer to the nearest meter.
a 885 m b 1328 m c 443 m d 1734 m
Also Factor 12x + 16
Also Factor 12x3 +15x2 + 9 Also Factor 12x3 +15x2 + 9x 1
Hw answers
2
3
Factor
4
Difference of two squares
5
Factor 1. x2 ­ 9
2 3
2. 15x4­ 20x +10x 3. 40x+60
6
7
Factor
4. 8x + 16
7. 12x2 ­ 12
5. y3 + 4y
6. 6x3z ­ 18x4z2
8. b(b + 5) + 4(b + 5)
6. (3x + 4)(x – 1) + 2x(x – 1)
8
9