rachelcapt
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can someone / anyone tell me the trick to solve
501^2 - 400^2
Beginning to feel a little stupid now
501^2 - 400^2
Beginning to feel a little stupid now
How do you solve 501² - 400² quickly?
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Science Advisor
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rachelcapt said:can someone / anyone tell me the trick to solve
501^2 - 400^2
Beginning to feel a little stupid now
Incidentally, you are not solving anything. You are simplifying a numerical expression. "Solve" generally means you are obtaining the value of one or more unknown quantities.
rachelcapt
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Thank you both
(seems so obvious now you've helped me simplify it!)
(seems so obvious now you've helped me simplify it!)