5x^2+23x-10=0?

0 ⤊

use quadratic formula to solve quation. Correct answer gets 10 points :)

2006-12-07 12:53:06 · 2 answers · asked by SICK MY DUCK! 1 in Science & Mathematics ➔ Mathematics

2 answers

The quadratic formula is [-b +/- sq.rt(b^2 - 4ac)] / 2a

Here, a=5, b=23, c=-10.

[-23 +/- sq.rt(23^2 - 4*5*-10)] / 2*5
[-23 +/- sq.rt(529 - -200)] / 10
[-23 +/- sq.rt(729)] / 10
[-23 +/- 27] / 10

[-23 + 27] / 10 = 4 / 10 = 2/5
[-23 - 27] / 10 = -50 / 10 = -5

Your two answers are 2/5 and -5.

2006-12-07 12:58:22 · answer #1 · answered by Stephanie 2 · 0⤊ 0⤋

x = -5 and x = .4

2006-12-07 13:14:14 · answer #2 · answered by John L 1 · 0⤊ 0⤋