Solve. x^2 – 7x – 4 = 0?

1 ⤊

Solve. x^2 – 7x – 4 = 0

2007-11-01 17:01:04 · 3 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics

x = [ 7 ± √(49 + 16) ] / 2
x = [ 7 ± √(65) ] / 2
x = 7.53 , x = - 0.531

2007-11-01 22:58:42 · answer #1 · answered by Como 7 · 0⤊ 0⤋

x^2-7x=4
sqrt. of (x^2-7x)= sqrt. of 4=2
x-sqrt. of 7x=2
bye

2007-11-02 00:05:46 · answer #2 · answered by Harris 6 · 0⤊ 1⤋

(7+or- sqrt 65) / 2
7.53 or -.53

2007-11-02 00:06:04 · answer #3 · answered by Anonymous · 1⤊ 0⤋