Question

Выражение. 1.(n-1)(n-+3)(n-2)+(n+3)(n+2) 2.(5-3x)(2x-+1)(x-4)+x(6-x)

Answer 1

(n-1)(n-2)-(n+3)(n-2)+(n+3)(n+2) = (n-1)(n-2)+(n+3)(-(n-2)+(n+2)) = (n-1)(n-2)+(n+3)(-n+2+n+2) = (n-1)(n-2)+4(n+3) = n^2-3n+2+4n+12 = n^2+n+14

Answer 2

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