How do you simplify 2^ 020?

3 Answers
Feb 29, 2016

2^0 = 120=1

Explanation:

For any non-zero number aa:

a^0 = 1a0=1

Note that 0^000 is undefined, except in restricted circumstances.

color(white)()
Here's one way of thinking of it:

If nn is a positive integer, then:

2*n = overbrace(2+2+...+2)^(n color(white)(x)"times")

When n = 0 then 2*n is an empty sum, with value 0, the identity under addition.

2^n = overbrace(2xx2xx...xx2)^(n color(white)(x)"times")

When n=0 then 2^n is an empty product, with value 1, the identity under multiplication.

Feb 29, 2016

anything powered zero is equal to one

Feb 29, 2016

1

Explanation:

Think in:
2^1/2^1=1

Because we know that a number divided by itself is 1.

And as you may already know, when you divide exponents you just subtract them.
To simplify:
2^(1-1)=1
2^0=1

There is also a pattern:
2^3=8
2^2=4
2^1=2
Same base, decrease the exponent by 1 and get half the value
so:
2^0=1