Question

X suqre -5x+3 find the value if x=1/2

Answer 1

Let p(x) = x²-5x+3 
If x = 1/2 , 
then p(1/2) = (1/2)²-5(1/2)+3
                 = 1/4-5/2+3
                 = (1-10+12)/4
                 = 3/4 .