I need help,how do you solve this? 3 {x}^(2) + 2x - 5 ​

Question

I need help,how do you solve this?

`3 {x}^(2) + 2x - 5`
​

Answer 1

x = 1, -5/3

Explanation:

To solve the quadratic, use the quadratic formula:

`(-b+/-√(b^2-4ac) )/(2a)`

Here a=3, b=2 and c=-5.

`w=(-b+/-√(b^2-4ac) )/(2a) \\w=(-2+/-√(2^2-4(3)(-5)) )/(2(3)) \\w=(-2+/-√(4+60) )/(6) \\w=(-2+/-√(64) )/(6) \\w=(-2+/-8 )/(6) \\w=(-2+8 )/(6)=(6)/(6)=1 \\and\\w=(-2-8 )/(6) =(-10)/(6)=-(5)/(3)`