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5 votes
2^7 x 7^2

can someone explain how i am supposed to do this

2 Answers

1 vote

Answer:

6272

Explanation:

When doing this problem its important to

remember the order of operations (PEMDAS) so the first thing that needs to be done when solving this problem is to solve the exponets before you do the multiplication part of the problem.

when solving exponets I like to think of it by multiplying the bigger number by itself n number of times if n=the exponent. so 2^7= 2X2X2X2X2X2X2=128 and 7^2= 7X7=49.

after you solve the exponets multiply the two numbers together to get your answer

User Gabrtv
by
4.9k points
4 votes

Explanation:

An exponent is a symbol written above and to the right of a mathematical expression to indicate the operation of raising to a power.

Example: 2^4

2x2x2x2 You multiply 2 by itself 4 times.

A lot of people get confused and multiply 2x4, which is wrong.

2x2=

4x2=

8x2=

16x2=

32x2=

64x2=128

So 2^7 is 128.

Now onto 7^2...

This, you just multiply 7x7, which is easy. 7x7=49

Now you multiply 128 and 49.

128x49=6272

hope it helps!

User Semafoor
by
5.3k points