24-09-2015
Mathematics

Answered

what is the value of the expression when a is 5 and b is 3 4a^2-5b^2

Verified Answer :

KeaneNR KeaneNR

24-09-2015

So that gives you
4×5^2-5×3^2
First you have to do the exponents
5^2=25
3^2=9
Now you have 4×25-5×9
4×25=100
5×9=45
100-45=55
55 is the answer.

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