r^2+19rs+90s^2
The given expression is in the form of a quadratic equation. To simplify it, you can factor the expression.
r^2 + 19rs + 90s^2 = (r + 9s)(r + 10s)
So, the simplified expression is (r + 9s)(r + 10s).
r^2 + 19rs + 90s^2 = (r + 9s)(r + 10s)
So, the simplified expression is (r + 9s)(r + 10s).