alleryThe sum x + x + x can be simplified to
Ax^3
Bx + 3
C3 + x
D3x
Answer & Solution
Correct answer: D. 3x
1. Adding the same term repeatedly gives a multiple of it.
2. Three copies of x make 3x, where 3 is the coefficient.
3. x^3 would mean x times x times x, which is repeated multiplication.
_Source: Wikipedia, Elementary algebra, Simplifying expressions_
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