Factor the expression over the complex numbers. x^2+72

Step-by-step explanation:

To get the factors , first we solve the given expression for x

Subtract 72 from both sides

Take square root on both sides

square root (-1) is 'i'

and

Write the x values in the parenthesis to get the factor form

When 'a' is a x value then (x-a) is a factor

he spend 5.1 minutes chatting with his friends.

step-by-step explanation:

2/5+1/2=9/10

6/1-9/10=5.1