Which expression has the sum of twenty-six twentieths? two fifths plus four-tenths four-fifths, plus two fourths, one half plus three tenths, three fourths plus two fifths

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

Me solve this problem, and someone clearly explain to me how to solve it.1.) use the value of the discriminant to determine if the given trinomials has 2 real solutions, 1 real solution, or no real solutions. a.  x2  − 4x  − 7 = 0b. 4r2  + 11r  − 3 = 0c. 3m2  + 7 = 0d.  t2  + 2t  + 1 = 0

If f(x) = 3x2 - 2x+4 and g(x) = 5x + 6x - 8, find (f-g)(x).