cahier physique - physics workbook

PART 1 : LECTURE

example1

If you have to factor: 6x² + 5x - 4 , use a trial and error process. Sometime it is not factorable.
the skeleton could be :
(2x + ) ( 3x - )
4 could be = 2 x 2
or 4 x 1 or 1 x 4.
Try every thing

example2

Factor : 2x² + x - 15

example3

Factor 6x²- 10x + 5

example4

Factor 4x² - 30 x + 14

example5

- 5 x² + x + 4

PART II - QUIZ

from assignments due today

PART III assignments for next time.

p. 369 24, 11, 9
p. 370 52, 51, 55, 60, 66

+ Find the slope of a line perpendicular to 3x + 2y = 8
(2 lines are perpendicular if the product of their slopes = -1.
example if a line has a slope = 3, then the perpendicular line has a slope = - 1/3 )

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