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(28)^3 + (-15)^3 +(-13)^3 calculate using identities



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User Mayo
by
7.8k points

2 Answers

4 votes

Answer:

answer is 16380

Explanation:

answer is 16380

User Alok Gupta
by
8.2k points
3 votes

Answer:

  • 16380

Explanation:

We can see that:

  • 28 + (-15) + (-13) = 0

Use the following identity:

  • a³ + b³ + c³ = 3abc, if a + b + c = 0

Substitute the values to get:

  • 28³ + (-15)³ + (-13)³ = 3*28*(-15)(-13) = 16380
User Wess
by
6.9k points

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