2 answers:
Hi there!
( 5x² - 5x + 1 ) + ( 2x² + 9 - 6 )
⇒ 5x² - 5x + 1 + 2x² + 9 - 6
⇒ 5x² + 2x² - 5x + 1 + 9 - 6
⇒ 7x² - 5x + 10 - 6
⇒ 7x² - 5x + 4
~ Hope it helps!
Hi there!

First we can subtract between the right parenthesis.

Now we can just remove the parenthesis, since they don't have a function in this situation.

Next up is rearranging the expression in order to collect the terms later.

And finally we can collect the terms.

~ Hope this helps you!
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