cahier physique - physics workbook

PART 1 : LECTURE
Factoring is undoing multiplication 6 = 2.3
example1:
factor the binomial: 5x² + 10 x (pull the greatest commeon factor out )

example2: factor
10y³ - 25 y²

example3: factor
8x⁵ + 16x⁴ + 2x³

example4: factor
-3x + 12

example5: factor the common binomial
x (x+5 ) - 2 (x+5)

example6: x² (x-2 ) + 3 (x -2)

example7: to factor a 4 terms polynomial, try to factor by grouping
3x³ + 6x² + 2x + 4

example8:
x³ + 25x² + x + 25

PART II - QUIZ

from assignments due today

PART III ON YOU OWN p. 249 (don't open book in class)

1) 4 y² - 8

2) 5x⁴ - 20x³

3) A) factor a common factor with a negative coefficient
B) Find h(1) and h(0)
h(t) = - 16t2 + 64 t

4) (a -b) ( x+5) + (a - b )(x - y²)

5) y³ + 3y² + 4y + 12

6) 3x³ - 6x² -x +2

PART IV assignments for next time.

p. 353 3, 14, 17, 19, 24, 31, 32
p. 354 41, 48, 53
p. 355 74

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