Algebra

Quadratic Equations

Solve by Quadratic Formula

         

What is the root of the quadratic equation

x2+6x+9=0?x^2 + 6 x +9 = 0?

What are the roots of the quadratic equation

x22x48=0?x^2 -2 x -48 = 0?

What are the roots of the quadratic equation

x22x5=0?x^2 - 2 x -5 = 0?

From the top of a building of 960 feet, Tommy threw a coin upwards. The height of the coin from the ground tt seconds after it has been thrown is given by

h=16t2+8t+960. h = - 16t^2 + 8 t + 960.

How long (in seconds) would it take the coin to hit the ground?

What are the roots of the quadratic equation

0.5x2+0.6x0.2=0?0.5x^2 + 0.6 x -0.2 = 0?

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