Solving Quadratic Equations Square Root Graphing

What are the zeros of the function? Use the square root method to solve.

(x-5)² = 25

• ±0

• ±10

• {10, 0}

• {-10, 0}

What are the solutions to 2(x−7)² = 32 ?

• x = 7±√32

• x = ±√65

• x = 3 and x = 11

• x = -1 and x = 15

Solve the following quadratic function.

x² = 8

• x = ±4

• x = ±2√2

• x = ±4√2

• x = ±√4

When solving a quadratic function, we can use the square root method when there is no ____________ term. Fill in the blank by typing your answer below.

How many solutions does this function have?

• two

• one

• all real numbers

• no real solutions

How many solutions does this function have?

• two

• one

• all real numbers

• no real solutions

What are the solutions to this function?

• x={2}

• x={2,0}

• x={-2}

• x={0,-2}

What is the error made when saving this quadratic equation?

• There should be 2 answers, because the square root of 9 is -3 and 3

• Taking the square root should always be the first step

• 21 -3 is not 18 so that was a mistake from the start

• The answer should be x = - 4 because the square root of 9 is -3

What is the error made when solving this quadratic equation?

• The answer should only be -2 since the square root of -4 is -2

• The answer should only be 2, because the native cancels out, since we took the square root of a negative

• There is no error, everything was done correctly

• The answer should be no real solutions, since we can't take the square root of a negative

So far, which methods of SOLVING Quadratic Equations have we learned?

• Factoring

• Quadratic Formula

• Square Roots

• Graphing on Calculators

• Rainbow Method