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Solve by Quadratic Formula

 

 

Objective: I can solve trinomials using the quadratic formula.

 

Given the trinomial or quadratic equation ax2 + bx + c, we can find the values of x by using the quadratic formula:

quadratic formula

 

Read the lesson on quadratic formula for more information and examples.

 

 

 

 

 

Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!
Solve the following equations using the quadratic formula.
Give your answer correct to the hundredths place.

5x2– 4x – 2 = 0
x =

2x2 + 7x + 2 = 0
x =

3x2 + 8x + 2 = 0
x =

7x2– 28x + 15 = 0
x =

5x2 + 12x + 3 = 0
x =

2x2 + 3x – 4 = 0
x =

5x2 + 30x – 18 = 0
x =

x2– 16x – 10 = 0
x =

x2– 2x – 5 = 0
x =

5x2– 8x – 30 = 0
x =

 

 

 

 

We hope that the free math worksheets have been helpful. We encourage parents and teachers to select the topics according to the needs of the child. For more difficult questions, the child may be encouraged to work out the problem on a piece of paper before entering the solution. We hope that the kids will also love the fun stuff and puzzles.

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