4. Which expression is equivalent to (15c-13c^2+4)-(8c+10-3c^2) ? 23c^2-3c+1 -10c^2+7c-6 -16c^2+13c+14 16c^2-13c-14

To find the expression equivalent to $(15c-13c^{2}+4)-(8c+10-3c^{2})$, we need to simplify the expression by combining like terms.<br /><br />Step 1: Distribute the negative sign to the terms inside the parentheses:<br />$(15c-13c^{2}+4)-(8c+10-3c^{2}) = 15c - 13c^{2} + 4 - 8c - 10 + 3c^{2}$<br /><br />Step 2: Combine like terms:<br />$15c - 13c^{2} + 4 - 8c - 10 + 3c^{2} = -10c^{2} + 7c - 6$<br /><br />Therefore, the expression equivalent to $(15c-13c^{2}+4)-(8c+10-3c^{2})$ is $-10c^{2}+7c-6$.