Find the constant term that should be added to make the following expression a perfect square trinomial.
x^2-2x
x^2+3x
Take one half the second term, square it.
1/2 *2=`1, squred, 1
1/2 *3=3/2, squared, 9/4
x^2-2x
x^2+3x
Take one half the second term, square it.
1/2 *2=`1, squred, 1
1/2 *3=3/2, squared, 9/4