How would you factor the following?

4 ⤊

1. 5x^2-15=0

2. 5x^2=14+33x

2007-11-01 15:39:16 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics

1.
5(x^2 - 3)
x = ±√3

2.
5x² = 14 + 33x
5x² - 33x - 14 = 0
(5x + 2)(x - 7) = 0
x = -2/5, x = 7

2007-11-01 15:52:37 · answer #1 · answered by Anonymous · 3⤊ 0⤋

1.
5xÂ² - 15 = 0
5(xÂ² - 3) = 0
x = Â±â3

2.
5xÂ² = 14 + 33x
5xÂ² - 33x - 14 = 0
(5x + 2)(x - 7) = 0
x = -2/5, x = 7

2007-11-01 22:43:14 · answer #2 · answered by Philo 7 · 1⤊ 0⤋

5x^2 - 15 = 0
5 (x^2 - 3) = 0

5x^2 - 33x - 14 = 0
5x^2 - 35x + 2x - 14 = 0
5x (x - 7) + 2 (x - 7) = 0
(x - 7) (5x + 2) = 0

2007-11-01 22:45:38 · answer #3 · answered by achain 5 · 0⤊ 0⤋