Question

-15+23r+9r^2-16r+10

A 9r^-10-7r
B 16r^2-5
C 9r^2-7r^-5
D 9r^2+tr-5

Answer 1

`9r^2+tr-5`

The given expression is a polynomial in the variable r. The correct answer among the options provided is D, which has the same terms as the given expression, in the same order, but with an additional term (tr) at the end. The other options do not match the given expression.

Answer 2

9r^2+7r-5

Explanation:

-15+23r+9r^2-16r+10

=-15 + 9r^2 + 7r +10

= 9r^2 + 7r - 5