Question 653139
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Hi,
{{{-1*(2n-1) -1*(3n+2) + 3}}}  |Removing Parenthesis and combining Like Terms
{{{-2n + 1 - 3n - 2 + 3 = -5n + 2 }}}

{{{3a^2 - b^2}}}  | Evaluating expression when a=2 and b=-1
{{{3(2)^2 - (-1)^2 = 11}}}