Which is the length of the third slide of the right triangle

If 1/√5+1/√5+1=p+q√r , find the values of p, q and r

Select the correct answer from each drop-down menu. consider the following polynomials equations. 3x^2(x-1) and -3x^3+ 4x^2-2x+1 perform each operation and determine if the result is a polynomial. is the result of a + b a polynomial? yes or no is the result of a - b a polynomial? yes or no is the result of a · b a polynomial? yes or no

Which expression is equivalent to -12(3x-3/4)