Step-by-step explanation:
Apply Rational Root Thereom:
If we have a polynomial, P(x), the possible roots of the polynomial are the factors of the constant divided by the factors of the leading coeffceint.
Our constant is 10 and our leading coefficient is 2 so our possible factors are (the factors are positive and negative).
10:1,2,5,10
2:1,2
So our possible roots are
Remeber to include the plus and minus sign.