What is the exact value for the expression the square root of 189. − the square root of 21. + the square root of 84.? simplify if possible.

If c(x) = 4x – 2 and d(x) = x2 + 5x, what is (cxd)(x)

What would be the reasons for lines 3 and 4? a. addition property; subtraction property b. addition property; solve c. substitution property; subtraction property d. substitution property; prove

I'm a polygon i have no parallel lines i am formed 3 line segments i have one right angle two of my angles are angles what am i