Someone help me solve this problem?
2xsquared - 7x - 1 = 0
2007-04-07 02:34:59 · 4 answers · asked by Amy_Lynn 1 in Education & Reference ➔ Homework Help
This equation is a quadratic equation with irrational solutions. This means, you will need to use the quadratic formula to solve it (or completing the square). Because there is no 'mathtype' functionality here, I think you probably should refer to the notes your teacher gave you (or your text) to find the formula and substitute the values from your equation and simplify to get your solutions.
Good luck.
2007-04-07 02:42:43 · answer #1 · answered by suesysgoddess 6 · 1⤊ 0⤋
Using the quadratic formula -b plus or minus the square root of b squared minus 4(ac) over 2 a, the answer is 7 plus or minus the square root of 42 over 4.
2007-04-07 09:49:08 · answer #2 · answered by Big Blue 5 · 0⤊ 0⤋
use the formula x=-b±(square root of (b²-4ac))/2a
meaning x= (7±(square root of (-7²-4(2)(-1))/2(2)
x=3.63745, x=-0.13746
2007-04-07 09:53:34 · answer #3 · answered by damien_902003 1 · 0⤊ 0⤋
u can use the formula of
{-b+-root[square of b - 4ac]} / 2a
ie the root of x will be
(7+root 59)/4 and (7-root59)/4
2007-04-07 10:01:51 · answer #4 · answered by sourav b 1 · 0⤊ 0⤋