Remove parentheses.
Apply the distributive property.
Simplify.
Multiply by .
Multiply by .
Multiply by .
Add and .
Add and .
Add and .
Subtract from .
Simplify by adding numbers.
Add and .
Add and .
Simplify 6u^2+4u+7+(7u^2+8u+4)-(-2u^2+6u-2)