a) Find the following values using the imaginary unit i :
i) 4* (-1)^1/2
11) 9x^2 +18 = 0
iii) ( 3 + 4i )( 2 + 5i )
b) George's age is three -fourths of Angel' s age. In 5 years George's age will be 7/9 Angel's age.
how old is George now ?
The solution provides examples of applications of imaginary numbers. It also shows how to set up and solve the equation with fractions to solve the word problem.