Question 1198688


Find the zeros of the function {{{f(x)=4x^2-11x-3}}}


set {{{f(x)=0}}}


{{{4x^2-11x-3=0}}}.......factor

{{{4x^2+x-12x-3=0}}}

{{{(4x^2+x)-(12x+3)=0}}}

{{{x(4x+1)-3(4x+1)=0}}}

{{{(x - 3) (4x + 1) = 0}}}

solutions:

if {{{(x - 3)= 0}}}=>{{{x=3}}}

if {{{ (4x + 1) = 0}}}=>{{{x=-1/4}}}