Remediation 2.2 CFA Quadratic Formula

Identify a, b, and c in: x²−6x+14

What are the zeros of

$$f\left(x\right)=x^2+7x-18$$  ?

Solve using the quadratic formula:

4x² + 4x + 1 = 0

Use the quadratic formula to find the solutions for

y = -x² - 5x + 12

If the discriminant of the quadratic equation is equal to 0, how many real solutions are there?

If the discriminant of the quadratic equation is equal to 4, how many real solutions are there?

How many solutions does this equation have?

What is the discriminant of $$4x^2+8x+6=0$$ AND what type of solutions does it have?

$$5x^2=10x-5$$  

What is the discriminant of the equation AND what type of solutions does it have?

A frog is sitting on the ground when he is scared by a big dog. His movement is modeled by the equation h = -6t² + 6t where h is the frog's height at any given time, t . How many seconds until the frog is back on the ground?

The function f(t) = -5t²+20t + 60 models the approximate height of an object t seconds after it is launched. How many seconds does it take the object to hit the ground?

Solve using the quadratic formula.

$$r^2-2r+4=0$$  

Solve using the quadratic formula. $$f\left(x\right)=2x^2-4x+7$$  

Find the sum.

(5-2i) + (-7+8i)

Simplify:

(10+ 15i) - (48 - 30i)

Simplify

√-4