Quiz 1 in Quadratic Equation (SD, extracting and factoring)

• ax² + bx + c = 0

• ax + b + c = 0

• a = bx + c

• ax + b² + c = 0

Which of the following is a quadratic equation?

• 3x + 5 =0

• (x+1) (x-2) = x²

• (x+2) (x-3) = 5

• 2x³ +x² -5 = 0

Given (𝑥 – 1)² + 3 = 2𝑥 + 1, find the value of the constant term.

• 1

• 3

• -1

• -3

Which of the following is equivalent to 𝑥² + 4𝑥 – 7 = 0?

• (𝑥 + 1) (𝑥 – 7) = 0

• (𝑥 + 4) (𝑥 – 3) = 5

• (𝑥 + 5)(𝑥 – 3) = 6

• (𝑥 + 1)(𝑥 + 3) = 10

When the quadratic equation (𝑥 + 5) (2𝑥 – 3) = 2(𝑥 + 1) is written in standard form, what are the values of a, b, and c.

• 𝑎 = 4, 𝑏 = 19, 𝑐 = −17

• 𝑎 = 2, 𝑏 = 5, 𝑐 = −17

• 𝑎 = 1, 𝑏 = −5, 𝑐 = 17

• 𝑎 = 2, 𝑏 = 10, 𝑐 = 17

If x and c are complex number and if 𝑥² = 𝑐, then 𝑥 = √𝑐 or 𝑥 = −√x

• Square Root Property

• Multiplication Property

• Addition Property

• Zero Product Property

The square root of 81.

• ±8

• ±16

• ±9

• ±7

A practical way to solve 𝑥 ²– 25 = 0.

• factoring

• extracting the square root

• completing the square

• quadratic formula

How many real number solutions does the equation 𝑥 ² = 𝑐, where 𝑐 > 0 have?

• no real solution

• two

• three

• one

What are the roots of 𝑥 ² – 144 = 0?

• ± 24

• ± 11

• ± 12

• ± 13