Find all complex square roots of -4i. In other words, find all complex solutions of x^2 = -4i

#12 find the value of x. #13 find the value of the variable.

Arectangle with an area of 47 m² is dilated by a factor of 7. what is the area of the dilated rectangle? enter your answer in the box. do not leave your answer as a fraction.

Its due ! write an equation in which the quadratic expression 2x^2-2x 12 equals 0. show the expression in factored form and explain what your solutions mean for the equation. show your work.