Factoring: Level 1
Solve by factoring
5s(s-3) = 0
s=0 or s=3
Solve the quadratic by factoring:
x2 + 9x + 20 = 0
x = -4, x = -5
1/(sqrt5
sqrt5/5
What city did Mrs. K live in before moving to Connecticut?
New York City
This is the formula for the Pythagorean theorem
a2+b2=c2
the sum of the squares of the two legs equals the square of the hypotenuse
42x2 - 7x = 0
7x(6x - 1) = 0
7x = 0 or 6x - 1= 0
x=0 6x = 1
x= 1/6
Solve this quadratics by factoring.
x2 + 2x - 3 = 0
x2 + 2x - 3 = 0
(x-1)(x+3) = 0
x = 1 or x = - 3
2/sqrt(3)
(2sqrt(3))/3
How do you say 92 in French?
Quatre-Vignt Douze
What kind of triangles does the Pythagorean Theorem apply to?
Right (90 degree) triangles
Solve this quadratic equation by factoring
x2 -64 = 0
x2 - 64 = 0
(x +8)(x - 8)=0
x+8=0 or x - 8 = 0
x=8 or x= -8
Solve the quadratic by factoring:
4x2 + 8x + 3 = 0
(2x + 3)(2x + 1) = 0
x = -1/2, x = -3/2
10/sqrt(5)
2sqrt5
What degree incline is the maximum requirement for building wheelchair safe ramps?
5 degrees
Find the hypotenuse of the right triangle:
side a = 3 in
side b = 4 in
side c = ?
5 in
Solve the quadratic by factoring:
x2 - 2x - 15 = 0
x2 - 2x - 15 = 0
(x - 5)(x + 3) = 0
x = 5, x = -3
Solve this quadratics equation by factoring.
6x2 - x - 2 = 0
6x2 - x - 2 = 0
6x2 - 4x + 3x - 2 = 0
(3x - 2)(2x + 1)= 0
x = 2/3 or x -1/2
(4sqrt(12))/(3sqrt(3))
8/3
What single-syllable number has the highest value?
12
Find the missing leg:
side a = 5 ft
side b = ?
side c = 13 ft (hypotenuse)
12 ft
Factor to solve
2x2 -19x - 10 = 0
2x2 - 19x -10 =0
(2x + 1)(x - 10) = 0
2x+1 = 0 or x - 10 = 0
2x= -1. x= 10
x= -1/2
Solve the quadratic:
6x2 - 7x - 20 = 0
6x2 - 7x - 20 = 0
6x2 - 15x + 8x - 20 = 0
(2x - 5)(3x + 4) = 0
x = 5/2 or x = -4/3
(5sqrt2)/(2sqrt(15)
sqrt30/6
What is the highest number that doesn't contain an "N" if it were spelled out in English?
88 (Eighty-eight)
How can you use the Pythagorean theorem to find missing values of any triangle?
Split the triangle into right triangles, and use the available values to find the missing numbers