You can
put this solution on YOUR website! Solve by using the quadratic formula.
5x² + x = 3
5x² + x = 3
Get 0 on the right by subtracting 3 from both sides
5x² + x - 3 = 0
Use the quadratic formula:
______
-b ± Öb²-4ac
x = —————————————
2a
where a = 5; b = 1; c = -3
_____________
-(1) ± Ö(1)²-4(5)(-3)
x = ————————————————————————
2(5)
____
-1 ± Ö1+60
x = —————————————
10
__
-1 ± Ö61
x = ———————————
10
Using the + and a calculator, one solution equals
about .6810249878.
Using the - and a calculator, the other solution
equals about -.8810249676.
Edwin
