Solving Polynomial Equations

1. Solve  x² + 7x - 30 = 0

  x = 3,  x = -10

  x = -3, x = 10

  x = 0, x = -3, x = -10

2. Solve 6x² + 13x + 5  =  0

  x = -1,  x =  -5

  

 

3. Solve 9x² - 6x + 1  =  0

  x = -

  x = 

 x = 3

4. The measurements of the three sides of a right triangle are consecutive integers.   The hypotenuse is 2 meters longer than the shortest side.  One leg it 1 meter longer than the shorter leg.  What are the lengths of each side?

 Short leg -3 meters, Long leg -4 meters, Hypotenuse -5 meters

 Short leg 1 meters, Long leg 2 meters, Hypotenuse 3 meters

 Short leg 3 meters, Long leg 4 meters, Hypotenuse 5 meters

5.  The total surface area of A of a cone with radius r and a slant height of s is given by the equation

What is the radius of the cone if its total surface area is 8 cm. and the slant s measures 2cm?

 2 cm.

 4 cm.

 4 cm