Question 1031481

Find the zeroes of the function algebraically f(x) =2x2-3x-20
<pre>{{{2x^2 - 3x- 20}}}
(2x + 5)(x - 4) = 0
2x + 5 = 0      OR      x - 4 = 0
2x = - 5        OR      x = 0 + 4 
{{{highlight_green(matrix(1,3, x = -(5/2), or, x = 4))}}}