Let g(x) = 2x and h(x) = x2 + 4. evaluate (h ∘ g)(1). 2 8 10 4

a complex number is a number that can be expressed in the form a + bi, where a and b are real numbers, and i is a solution of the equation x2 = −1. because no real number satisfies this equation, i is called an imaginary number. has no real solution, since the square of a real number cannot be negative.