November 2018 1 15 Report

Wskaż wszystkie przykłady, w których obliczenia wykonano bezbłędnie.

(4+x)^2= 4x+x^2+16

(1+n)^2= n^2+2n+1

(a+1)^2= a^2+1

(2n-6d)^2= 4n^2- 24nd+ 36d^2

(a-3)^2= a^2-6a+9

(6n-8a)^2= 12n^2+16a^2-96an


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