Question 84826
find the real and complex solution of the equation x^2-8=0
This is using the square root property:
{{{x^2-8=0}}}
{{{x^2-8+8=0+8}}}
{{{x^2=8}}}
{{{sqrt(x^2)}}}=+-{{{sqrt(8)}}}
x=+-{{{sqrt(4)*sqrt(2)}}}
x=+/-{{{2sqrt(2)}}}
Happy Calculating!!!