Question

Use the quadratic formula to solve 4x2 + x - 1 = 0

Answer 1

Compare your quadratic equation with \(ax^2+bx+c=0\)
find \[a=...?\\b=...?\\c=...?\\\] \[\\~ \\ \sqrt{b^2-4ac}=...?\]
then the two roots of x are:
\(\huge{x_{1,2}=\frac{-b \pm \sqrt{b^2-4ac}}{2a}}\)

Answer 2

\[-b \pm \sqrt{b ^{2} - 4ac}/2a\]

Answer 3

A. {.0.5, 0.7}
B. {-0.3, -0.1}
C. {0.2, 0.4}
D. {-0.6, 0.4}
This what i have to pick from

Answer 4

yes, for that u need to use the formula,
so, what values of a,b,c you got ?

Answer 5

a.4x^2
b.x
c. 1 ???

Answer 6

a,b,c are constants
so, a= 4
b=1
and c=-1
got this ?

Answer 7

Oh okay. Yes i got it . Thank you

Answer 8

welcome :)
ask if you need further help with this.