Introduction to the Quadratic Formula

Question 1

Consider the function f(x) = 3x2 + 7x + 2.

Revolt · Accepted Answer

: 25; : 2; : two real number solutions

Question 2

Which equations have a leading coefficient of 3 and a constant term of –2? Check all that apply. 0 = 3x2 + 2x – 20 = –2 – 3x2 + 30 = –3x + 3x2 – 2 0 = 3x2 + x + 20 = –1x – 2 + 3x2

Revolt · Accepted Answer

A: 0 = 3x2 + 2x – 2; C: 0 = –3x + 3x2 – 2; E: 0 = –1x – 2 + 3x2

Question 3

Which operation is performed in the derivation of the quadratic formula moving from Step 6 to Step 7?

Revolt · Accepted Answer

C: taking the square root of both sides of the equation

Question 4

⇒ 140

Revolt · Accepted Answer

82021

Question 5

Consider the function f(x) = 3x2 + 7x + 2.

Revolt · Accepted Answer

B: ✔ 25

Question 6

Which graph shows a quadratic function with a discriminant value of 0?

Revolt · Accepted Answer

D: [Image: On a coordinate plane, a parabola opens up. It goe...]

Question 7

Which values of c will cause the quadratic equation –x2 + 3x + c = 0 to have no real number solutions? Check all that apply. –51

Revolt · Accepted Answer

A: –5; B:

Question 8

Which value of b will cause the quadratic equation x2 + bx + 5 = 0 to have two real number solutions?

Revolt · Accepted Answer

A: –5

Question 9

01✔ 23

Revolt · Accepted Answer

C: ✔ 2

Question 10

zero real number solutionsone real number solution✔ two real number solutions

Revolt · Accepted Answer

C: ✔ two real number solutions

Introduction to the Quadratic Formula Answers

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