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3 votes
What is 15^10 + 15^11 + 15^12+ 15^13

2 Answers

2 votes

Answer:

Below.

Explanation:

15^10 + 15^11 + 15^12+ 15^13

= 15^10(1 + 15 + 15^2 + 15^3)

= 15^10 * 3616

= 2,085,167,812,500,000

User Vincent Claes
by
7.7k points
3 votes

Explanation:


15^(10)+15^(11)+15^(12)+15^(13)

You can look at it like this:


15^(10)+15^(11)+15^(12)+15^(13)=15^(10)+15^(10)\cdot15+15^(10)\cdot15^2+15^(10)\cdot15^3\\\\=15^(10)\cdot(1+15+15^2+15^3)=15^(10)\cdot(1+15+225+3375)\\\\=15^(10)\cdot3616=15^(10)\cdot32\cdot113=15^(10)\cdot2^5\cdot113=2.085.167.812.500.000

User Adam Michael Wood
by
8.3k points

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