Question 982217
.
Difference of two squares:
{{{36x^2-25=0}}}
Take square root of 1st term plus square root of 2nd term:
6x+5
Multiply by square root of 1st term minus square root of 2nd term:
{{{(6x+5)(6x-5)=0}}}
{{{6x+5=0}}} {{{or}}} {{{6x-5=0}}}
{{{6x=-5}}} {{{or}}} {{{6x=5}}}
{{{x=-(5/6)}}} {{{or}}} {{{6=5/6}}}
x=plus or minus (0.8333)
.
However, the quadratic formula does work:
*[invoke quadratic "x", 36, 0, -25 ]