Pls √-4 - √-25 express complex numbers in terms of i

This is so harddd! solve. 1 + 1 = solve 4 + 4 = solve 3 x 3

Given f(t) = 282 - 53 +1, determine the function value f(2). do not include f(z) = in your answer

The length of a rectangle is x times the square root of 100. the width is one-half y more than three-halves x. given that the area of the rectangle is 125 cm2, which equation could represent the rectangle in terms of x and y? a) 5xy − 15x = 125 b) 5xy + 15x = 125 c) 15x2 − 5xy = 125 d) 15x2 + 5xy = 125