Answer: [tex]19u^{2} -12u[/tex]
Step-by-step explanation:
1) You would have to distubite the 2 to the numbers inside the paretheis.
[tex]( -12u + 20u^{2} ) + -u^{2}[/tex]
2) After that you add the like terms together.
[tex]20u^{2}-u^{2}= 19u^{2}[/tex]
[tex]-12u[/tex] (Nothing to add this term with.)
3) Put them together to make your answer.
[tex]19u^{2}-12u[/tex]
