8. Which expression is equivalent to (3n^2-5n+2)-(-8n+3n^2) 6n^3+9n^2-5n -3n^2+5n+2 3n+2 6n^3+9n^2+5n

To find the expression equivalent to $(3n^{2}-5n+2)-(-8n+3n^{2})$, 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 />$(3n^{2}-5n+2)-(-8n+3n^{2}) = 3n^{2}-5n+2+8n-3n^{2}$<br /><br />Step 2: Combine like terms.<br />$3n^{2}-5n+2+8n-3n^{2} = -5n+2+8n = 3n+2$<br /><br />Therefore, the expression equivalent to $(3n^{2}-5n+2)-(-8n+3n^{2})$ is $3n+2$.