Question 181703
x to the second power = -64
x to the second power + 48= 0
:
{{{x^2=-64}}}
:
x=+-{{{sqrt(-64)}}}
:
x=+-{{{sqrt(-1*64)}}}
:
x=+-{{{8i}}}
:
+- is plus or minus
:
follow the same method with 
:
{{{x^2=-48}}}