Solve.
5(i + 2) - 9= 17-i

It says factor each expression 49x-28?

Find the magnitude, correct to two decimal places, made by each of the following with positive direction of the x axis a) y= x the answer is 45° but i don’t know how

The roots of the function f(x) = x2 – 2x – 3 are shown. what is the missing number?