Can you please explain how to do this and give me the answer so next time I know how to do it. Square root with -15 in it and square root with -4 in it Simplify using i

15i and 4i

Step-by-step explanation:

i is an imaginary number also shown as .  

Since we have , thats 15* .  Substitute for i and we get 15*i or 15i.

We do the same for .  This is 4* or 4*i or 4i.

An easy way to do this is to take the negative inside the square root like , take the absolute value -6 absolute value=6 and times it by i.  So now it becomes 6i

x=-2

infinite number of lines, so there is an infinite number of equations.

step-by-step explanation:

there are an infinite number of line that passes through the point (-2,5)

x=-2   is one line that passes through the point

y = 5 is another line that passes through the point

(these two lines are perpendicular to each other).

since the number of   numbers are infinite and the slope is the ratio of two numbers,(change in y over change in x) we can have an infinite number of slopes.     our only condition is that it passes through the point (-2,5)