Scientists are growing bacteria in a culture. At the beginning of each day, the scientists use a microscope to count the number
2 answers:
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Let's start making our expression.
Just take the number 40 and change it around.
That's a good start.
49 is equal to 7×7, or 7². 9 is equal to 3×3, or 3².
So we can also write this as
You can really do whatever you want with it as long as it's still 40, just make sure you've got an exponent there. Here's another example.
Just take the number 40 and change it around.
That's a good start.
49 is equal to 7×7, or 7². 9 is equal to 3×3, or 3².
So we can also write this as
You can really do whatever you want with it as long as it's still 40, just make sure you've got an exponent there. Here's another example.