Introduction to the Quadratic Formula

Question 1

common denominator distributive property addition property of equality ✔ multiplication property of equality

Revolt · Accepted Answer

✔ multiplication property of equality

Question 2

Determine the justification for the steps from the derivation of the quadratic formula.

Revolt · Accepted Answer

✔ common denominator; Justification of step A:: common denominator; Justification of step B:: multiplication property of equality

Question 3

Consider the quadratic function f(x) = 2x2 – 8x – 10.

Revolt · Accepted Answer

The x-component of the vertex is .: 2; The y-component of the vertex is .: –18; The discriminant is b2 – 4ac = (–8)2 – (4)(2)(–10) = .: 144

Question 4

✔ –18X –101418

Revolt · Accepted Answer

✔ –18

Question 5

–161664✔ 144

Revolt · Accepted Answer

✔ 144

Introduction to the Quadratic Formula Answers