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2nd Degree Equation Exercises


1) Identify the coefficients of each equation and say whether it is complete or not:

a) 5x2 - 3x - 2 = 0

b) 3x2 + 55 = 0

c) x2 - 6x = 0

d) x2 - 10x + 25 = 0

2) Find the roots of the equations:

a) x2 - x - 20 = 0

b) x2 - 3x -4 = 0

c) x2 - 8x + 7 = 0

3) Of the numbers -2, 0, 1, 4, which of them are roots of equation x2-2x-8 = 0?

4) The number -3 is the root of equation x2 - 7x - 2c = 0. Under these conditions, determine the value of the coefficient c:

5) If you multiply a real number x by yourself and the result subtract 14 you will get five times the number x. What is this number?