i
what is i2
-1
What is the first thing you do to solve an quadratic inequality?
Put it in Demos
what is (0,0) called
origin
What are roots of (x2+3x+2)?
(x=-2 or x=-1)
What Course is this ?
Honors Algebra 2
what is square root of i
Square root of -1
What is second thing you do?
Find the roots, by setting the equation equal to zero, or the level of the inequality .
What is the coordinates of (h,k)?
vertex
What are roots of (x2+9x+20)?
(x=-4 or x=-5)
what are you calculating with A-1 . B
What is discriminant formula part of ?
quadratic equation
What is the third thing you do?
test points in the interval to see if the inequality is true.
y=a(x-h)+k
Vertex form
What are roots of (x2+5x+6)?
(x=-3 or x=-2)
What are the 2 ways using technology to solve Matrix calculations
Put in calculator or put in desmos matrix
What is the discriminant formula?
D=b2-4ac
what is fourth thing?
Write the domain interval of the solution set.
a(x-r1)(x-r2)=y
factored form
what is factored form perfect square of (x2+10x+25)?
(X+5)2
what is the Square root of 64
8
What is the quadratic formula?
X= (-b+ or - square root (b2- 4ac))/(2a)
what is the factored form of y=x2-5x+6
Y=(x-3)(x-2)
ax2+bx+c= y
standard form
what is factored form perfect square of (x2+6x+9)?
(X+3)2
How many inches is a 3 meters rounded to 2 decimal places?
118.11