Question 350672
Hi,
.
{{{9x^2 -36 = 0}}}
{{{9(x^2 -4) = 0}}}
(x + 2)(x-2)= 0
x = 2 or x= -2
.
{{{z^2 - 8z -9)}}}
(z-9)(z+1)
z = 9 or z = -1
.
{{{sgrt(x-1) = -3}}}
(x-1) = 9
x = 10
.
3x^2 -5x -4 =0
Use quadratic formula
*[invoke quadratic "x", 3, -5, -4]