Math4childrenplus.com

Quadratic Equations

Solve the following equations using the quadratic formula where necessary:

1) x + 7x + 10 = 0 2) x - 5x + 6 = 02 2

5) x + 4x + 10 = 0 6) x + 4x - 5 = 02 2

7) x = 8x - 7 8) x - 2 = x2 2

3) x - 4 = 0 4) x - 3x = 022

x = - b _ ( b - 4ac )+

2a

2

Math4childrenplus.com

Quadratic Equations

Solve the following equations using the quadratic formula where necessary:

1) x + 7x + 10 = 0 2) x - 5x + 6 = 02 2

5) x + 4x + 10 = 0 6) x + 4x - 5 = 02 2

7) x = 8x - 7 8) x - 2 = x2 2

3) x - 4 = 0 4) x - 3x = 022

x = - b _ ( b - 4ac )+

2a

Answers

2

x = 5 or 2 x = 3 or 2

_ 2+x = x = 0 or 3

-1 or - 3x = x = - 5 or 1

x = 1 or 7 x = 2 or -1