Question 8 • Algebra II
For an expression to be a perfect cube, its numerical coefficient must be a perfect cube and each variable’s exponent must be divisible by 3. Since 1,331 = 11³ and 18, 15, and 21 are all divisible by 3, the expression with coefficient −1,331 and p²¹ is a perfect cube: it is the cube of −11m⁶n⁵p⁷.
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