# SOLUTION: Solve the following quadratic equations by factoring. x2 + x - 20 = 0 x = 5 x = 4 x = 4 or x = -5 x = -4 or x = 5 4. 2x2 – 15 = –7x

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Question 460074: Solve the following quadratic equations by factoring.
x2 + x - 20 = 0
x = 5
x = 4
x = 4 or x = -5
x = -4 or x = 5
4. 2x2 – 15 = –7x
x = 1.5 or x = -3
x = 1.5 or x = -5
x = 3 or x = -5
x = 1.5 or x = 5

5. 3x2 – 5x = 2
x = 1/3 or x = 3
x = 1/3 or x = 2
x = -1/3 or x = 2
x = - 1/3 or x = 3

6. 3x2 + 3 = 10x
x = 1/3 or x = 3
x = 1/3 or x = 2
x = -1/3 or x = 2
x = - 1/3 or x = 3

x2 + 7x + 9 = 0

8. x2 + 6x = 0
x = 1 or x = 6
x = 0 or x = 6
x = 0 or x = -6

9. 15x2 – 7x – 2 = 0
x = 2/3 or x = -1/5
x = -2/3 or x = 1/5
x = 3/2 or x = -5
x = -3/2 or x = 5

10. x2 - 9x + 5 = 0