5y-15+2y²-6y

To simplify the expression \(5y - 15 + 2y^2 - 6y\): 1. Combine like terms. - The terms with \(y\): \(5y - 6y = -1y\) or \(-y\). - The constant term is \(-15\). - The \(2y^2\) term remains as it is. Putting it all together, we get: \[ 2y^2 - y - 15 \] So, the simplified expression is: \[ 2y^2 - y - 15 \]