Question

can someone help me....
use the quadratic formula to solve 2x squared-3x-1=0

Answer 1

Hi there!
Welcome to OpenStudy :-)
First identify the abc values then plug them in :)

\(\normalsize\color{ slate }{{\bbox[5pt, lightcyan ,border:2px solid black ]{ \LARGE{x=~} \huge{ \frac{-\color{magenta}{b} \pm\sqrt{ \color{magenta}{~b} ^2-4 \color{blue}{a} \color{red}{c}~}}{2 \color{blue}{a}} }~ }}}\)

when the equation is \(\large\color{black}{ \color{blue}{a} x^2+ \color{magenta}{b}x+ \color{red}{c}=0 }\).

Answer 2

okay, thank you!!

Answer 3

You're welcome! :D

Answer 4

x =
1/4 (3 \[PlusMinus] Sqrt[17])
Cell[BoxData[
RowBox[{"x", "\[Rule]",
RowBox[{
FractionBox["1", "4"], " ",
RowBox[{"(",
RowBox[{"3", "\[PlusMinus]",
SqrtBox["17"]}], ")"}]}]}]], "Input",
CellChangeTimes->{{3.677903902754315*^9, 3.6779039028315573`*^9}}]