Complex Numbers
Simplify the following expressions 1. /sqrt(-324) 2. 2sqrt(-147)
18i and 14isqrt(3)
When solving quadratics graphically, what key feature is needed?
What are your x-intercepts
What is vertex form of a quadratic function
f(x)=(x-h)2+k
What information can we gather from a discriminant?
What is the number and type of roots.
How do you find area?
What is lxw
Simplify (21+9i)-(13-2i)
What is 8+11i
When a parabola does NOT cross the x-axis what type of solutions does it have?
What are non-real or imaginary solutions
What is factored form of a quadratic function?
What is f(x)=(x+r1)(x+r2).
Find the discriminant of -2x2+8=x2-28
What is 432
What formula do you use in DESMOS to find quadratic regression
What is y~ax2+bx+c.
Simplify
(7-i)2
What is 48-14i
Solve 7x2-19x-6=0
What is x=-2/7, 3
Convert f(x)=x2+16x+63 to vertex form.
f(x)=(x+8)2-1
What is the best method for solving -x2+2x-8=0
What is completing the square or the quadratic formula
A chicken coup is 10 by 14 feet. The farm wants to double the current area by adding the same amount, x, to the length and width. What are the dimensions of the new enclosure?
18.85 by 14.85
Perform division for 8/-12i
What is 2i/3
Solve (x-8)2-7=25
x=8+/-4sqrt2
Convert f(x)=(x-1/2)2-25/4 to Standard Form.
f(x)=x2-x-6
Use the best method to solve 4x2+32x-36=0
x=-9,1
Natalie found a tennis ball outside a tennis court. She picked it up and threw it over a 12 foot fence. Using the equation h(t)=-16t2+18t+5. Will she make it over the fence.
No
Simplify (3-6i)/(4-3i).
What is (6-3i)/5
Solve 10x2+8x-1=0
x=(-4+/-sqrt26)/10
Identify the Axis of Symmetry and vertex of (x+9)(x+7).
AOS is x=-8; vertex:(-8,-1)
Find the discriminant of -2x2-5x-4=0
-7
0<=x<=2.223