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Lesson 5: Exponents with negative bases

# Sign of expressions challenge problems

Some examples that test our understanding of what happens when we multply or divide a bunch of positive or negative numbers.

## Want to join the conversation?

• what does the dot mean?
• The dot is just another symbol to represent multiplication of expressions (the x is the other one).
• why is zero neither positive nor negative
• 0 = nothing
so you cant have -nothings (-0)
and you cant have +nothings (+0)
if you have nothing you simply just have absolutely nothing
which is 0 things
• at he could be done but nooo he had to make it an eight minute video
• , why is T to the power of nine positive? assume T>0
• No matter how many POSITIVE integers you multiply together, the answer is still positive.
• Im confused
• Anything specifically?:)
• why when you multiply by zero you get zero?
• Zero times ANYTHING is always going to be zero.
(1 vote)
• So is -6 to the 60th power is a positive but -6 to the 59th power is a negative?
• Correct. Since 60 is an even number, the exponent's result is positive; but 59 is an odd number, so the result will be negative.