Question 1070156
If 4xsquared - 100 = 0 what are the roots of the equation
<pre>{{{4x^2 - 100 = 0}}}
{{{4(x^2 - 25) = 4(0)}}} ------ Factoring out GCF, 4
{{{x^2 - 25 = 0}}}
(x - 5)(x + 5) = 0 ------ Factoring DOTS
x - 5 = 0       OR      x + 5 = 0 
Roots: {{{highlight_green(matrix(2,3, x, "=", 5, x, "=", - 5))}}}
<b><u>FYI:</b></u> The roots CANNOT be {{{matrix(1,3, - 5/2, or, 5/2)}}}, so let no-one tell you that!