Use the quadratic equation to solve this (bellow will be the image of the quadratic function)
Remember that quadratic functions are set up like so:
[tex]ax^{2} +bx +c = 0[/tex]
That means that in this equation...
a = 4
b = 7
c = -15
^^^Plug these numbers into the quadratic equation and solve...
[tex]\frac{-7+/-\sqrt{(7)^{2}-4(4)(-15)}}{2(4)}[/tex]
[tex]\frac{-7 +/-\sqrt{49+240}}{8}[/tex]
[tex]\frac{-7+/-\sqrt{289}}{8}[/tex]
[tex]\frac{-7+/-17}{8}[/tex]
Keep in mind that +/- is ±
[tex]\frac{-7+17}{8}[/tex] ---> [tex]\frac{5}{4}[/tex]
[tex]\frac{-7-17}{8}[/tex] ---> -3
Take the opposite of those numbers^^^ like so
(x + 3)(4x - 5)
Hope this helped!
~Just a girl in love with Shawn Mendes
