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General Test
Quantitative Reasoning
Algebra
What is the value of (a+b)3 - a3 + b3 ?
-3ab(a - b) +2b3
3ab(a + b) +2b3
3ab(a - b) b3
-3ab(a + b) +b3
(a+b)3 - a3 + b3
= a3 + b3 + 3ab(a+b) - a3 + b3
= 3ab(a + b) +2b3