Solve Quadratic Equations by Factoring and Find the Mistake

What should you do first in solving this equation by factoring?
x² + 6x - 13 = 3

• Get factored form

• Write down: a=1, b=6, c=-13

• Make it equal 0 by subtracting 3 on each side

• Type it all in a calculator.

Tags

CCSS.HSA-REI.B.4B

• Yes, the solution is correct.

• No, there is a mistake in factoring the equation.

• No, there is a mistake in finding the roots from the factors.

• No, there is a mistake in the original equation.

Tags

CCSS.HSA-REI.B.4B

Rewrite the equation in factored form and solve using the zero product property:

Tags

CCSS.HSA-REI.B.4B

When using factoring to solve a quadratic equation, what must be true?

• The equation must be set equal to 1.

• The equation must be set equal to 10.

• The equation must be set equal to 0.

• It is not necessary to set the equation equal to anything.

Tags

CCSS.HSA-REI.B.4B

• x = 5 only
  

• x = -5 only
  

• x = 5 and -5
  

• There are no real solutions
  

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CCSS.8.EE.A.2

What should you do first in solving this equation?
x² + 6x - 13 = 3

• Get factored form

• Write down: a=1, b=6, c=-13

• Make it equal 0 by subtracting 3 on each side

• Type it all in a calculator.

Tags

CCSS.HSA-REI.B.4B

Solve by factoring: x² = 7x + 18

• -7 and -18

• 9 and 2

• 9 and -2

• 2 and 7

Tags

CCSS.HSA-REI.B.4B

Solve for m by factoring.

• A

• B

• C

• D

Tags

CCSS.HSA-REI.B.4B

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

Tags

CCSS.HSA-REI.B.4B

CCSS.HSN.CN.C.7

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

• Factoring

• Quadratic Formula

• Square Roots

• Graphing on Calculators

• Rainbow Method

Tags

CCSS.HSA-REI.B.4B