Question

expand asch Simplify the following : (2-n)^2-n(n-3)​

Answer 1

Answer:

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Step-by-step explanation:

$(2-n)^2-n(n-3) \\ \\ (2) {}^{2} - 2(2)(n) + {(n)}^{2} - {n}^{2} + 3n \\ \\ 4 - 4n + {n}^{2} - {n}^{2} + 3n \\ \\ 4 - 4n \: \: \cancel{+ {n}^{2}} \: \: \cancel{ - {n}^{2}} + 3n \\ \\ 4 - 4n + 3n \\ \\ 4 - n$