Solving Quadratics by factoring and graphing assesment

Convert x² - 9x + 20 to factored form and solve.

• (x-10)(x+2); x = -2, 10

• (x+4)(x+5); x = -5, -4

• (x-4)(x-5); x = 4, 5

• Not factorable

ax²+bx+c=0  is the standard form of a quadratic equation.

• True

• False

The solutions of the quadratic equation 
x²+2x-15=0 are

• x = 3 or x = 5

• x = 5 or x = -3

• x = -5 or x = 3

• x = -3 or x = -5

The solutions of the quadratic equation 
x²-6x+8=0 are

• x = -2 or x = -4

• x = 2 or x = 4

• x = 8 or x = -1

• x = 8 or x = 1

What are the x- intercepts?

• x= 0 and x= -4

• x= 0 and x= 4

• y= 0

• x= 2

Use the graph of the function f(x)=-2x²+4x+6 to find the solution(s) of the equation -2x²+4x+6=0.

• x=-1

• x=3

• x=-1 and x=3

• x=1and x=8 

Factor x² + 6x + 9 and solve for x. 

• (x+3)(x+3); x = -3

• (x+4)(x+5); x=-4, -5

• (x-3)(x-3); x=3

• Not factorable

What are the solutions to this equation? (x-3)(x+2)=0

• x=3,-2

• x=-3,2

• x=2,3

• x=3,2

Find the zeros.

• 0 and 4

• 0 and -4

• 0

• -4

What is another name for the x-intercepts of a quadratic?

• y-intercept

• Zeros

• x-axis

• They don't have another name