1st Period-2021 Unit 1B: Solving Quadratics Quiz #1

Which of the following is INCORRECT?

• Quadratics can have two real solutions.

• Quadratics can have one real solution.

• Quadratics can have zero solutions.

• Quadratics can have two complex solutions.

Tags

CCSS.HSA-REI.B.4B

What are the solutions?

• x= -2, 1

• x= 1, 2

• x = -1,2

• x = 0,-4

Tags

CCSS.HSA.APR.B.3

CCSS.HSA.REI.B.4

Solve the following quadratic:  $x^2+121=0$  

• 60.5

• ± 11i

• ± 12

• 11i

What is the first step to solving THIS equation by completing the square?
a² + 10a + 21 = 0

• Set the equation equal to zero
• Divide 10 by 2 and add the result to both sides
• Add a² and 10a together
• Subtract the 21

Tags

CCSS.HSA-REI.B.4B

True or false:
The solutions, roots, x-intercepts, and zeros of a quadratic equation are all the same thing.

• True
• False, because the solution and root are the same but the x-intercept and zero are different
• False, because the x-intercept and root are the same but the zero and solution are different
• False, they are all different

Tags

CCSS.HSA.APR.B.3

CCSS.HSA.REI.B.4

How many solutions does this function have?

• Two

• One

• All real numbers

• Two non-real complex solutions

How many solutions does this function have?

• Two

• One

• All real numbers

• Two non-real complex

How many solutions does this function have?

• two

• one

• all real numbers

• no real solutions

Tags

CCSS.HSA.APR.B.3

CCSS.HSA.REI.B.4

CCSS.HSA.REI.D.11

CCSS.HSA.REI.D.10

What are the solutions to this function?

• x={-2,-1}

• x={-3,-1}

• x={-1,3}

• x={-1,-2}

Tags

CCSS.HSA.APR.B.3

CCSS.HSA.REI.B.4

CCSS.HSA.REI.D.11

Solve the following equation by completing the square:
n² - 2n - 3 = 0

• {3 and-1}
• {4 and -4}
• {5 and -3}
• {8 and -7}

Tags

CCSS.HSA-REI.B.4B