400 20x20=400x1=400
x3 + 2x2 - 19x - 20 = x3 + x2 + x2 + x - 20x - 20 = x2(x + 1) - x(x + 1) - 20(x + 1) = (x + 1)(x2 + x - 20) = (x + 1)(x - 4)(x + 5)
20 = 1 x 20, 2 x 10, 4 x 5, 5 x 4, 10 x 2, 20 x 1.
1 x 20, 2 x 10, 4 x 5, 5 x 4, 10 x 2, 20 x 1 = 20
The discriminant of y = x^2 - x + 20 is 1 - 4*1*20 = -79
1/20:= (1 ÷ 20) x 100%= 0.05 x 100%= 5%
1 x 20, 2 x 10, 4 x 5, 5 x 4, 10 x 2, 20 x 1
(20 x 1) + (1/10) = 20.1OR(20) x (1.1) = 22
x/4 + 5 = -1 (4)x/4 +(4)5 = -1 x+20 = -1 -20 -20 x= -21 x= -21
1 and 20 are a factor pair of 20 since 1 x 20= 20 2 and 10 are a factor pair of 20 since 2 x 10= 20 4 and 5 are a factor pair of 20 since 4 x 5= 20 5 and 4 are a factor pair of 20 since 5 x 4= 20 10 and 2 are a factor pair of 20 since 10 x 2= 20 20 and 1 are a factor pair of 20 since 20 x 1= 20
1 x 20, 2 x 10, 4 x 5 = 20
20 = 1 x 20, 2 x 10, 4 x 5, 5 x 4, 10 x 2, 20 x 1
1 x 20 = 20 2 x 10 = 20 4 x 5 = 20