Which of the following is a sum of two cubes?
A. n³+9
B. n³-27
C. 4a³b⁴c
D. 8a b c
Sum of Two Cubes
states that,
x³ + y³ = (x + y) ( x² - xy + y²)
Notice that the product (x³ + y³) is separated by the addition sign (+) and both terms, first term (x³) and second term (y³) is a cube of a number.
n³ + 9 is the only expression in the choices sufficed in the description.
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Problem
Which of the following is a sum of two cubes?
A. n³+9
B. n³-27
C. 4a³b⁴c
D. 8a b c
Answer
A. n³ + 9
Sum of Two Cubes
states that,
x³ + y³ = (x + y) ( x² - xy + y²)
Notice that the product (x³ + y³) is separated by the addition sign (+) and both terms, first term (x³) and second term (y³) is a cube of a number.
n³ + 9 is the only expression in the choices sufficed in the description.
#CarryOnLearning