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k + (k + 2) Show all properties used for each step to solve.
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k + (k + 2)
k + 1(k + 2) ... multiplicative identity
k + 1k + 1*2 ... distributive property
k+k+1*2 ... multiplicative identity
k+k+2 ... multiplication of 1 and 2
2k+2 ... combination of like terms
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