Quadratics and Complex Numbers — Test

Question 1

Which equation demonstrates the multiplicative identity property?

Revolt · Accepted Answer

open paren negative 3 plus 5 i close paren times 1 is equal to negative 3 plus 5 i

Question 2

If x squared plus m x plus m is a perfect-square trinomial, which equation must be true?

Revolt · Accepted Answer

x squared plus m x plus m is equal to open paren x plus 2 close paren squared

Question 3

The graph shows the height of a projectile t seconds after it is launched. If acceleration due to gravity is negative 16 the fraction with numerator ft and denominator s squared , which equation models the height of the projectile correctly? h of t is equal to A t squared plus v t plus h sub 0

Revolt · Accepted Answer

h of t is equal to negative 16 t squared plus 32 t plus 5

Question 4

Based on the graph, how many distinct real number solutions does the equation x cubed plus 6 x squared plus 12 x plus 8 is equal to 0 have?

Revolt · Accepted Answer

one real number solution

Quadratics and Complex Numbers — Test Answers

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