laws of exponents and power in maths of classes 7 of cbse board exercise of exponents and power of maths find it
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Law of exponents:
Product Rule:
a^m * a^n = a^(m+n)
Quotient Rule
a^m/ a^n = a ^(m-n)
Power Rule
(a^m)^n
= a^(mn)
Negative Exponents
a^-m = 1/a^m
1/a^-m = a^m
With different bases :
a^-m / b^-n
= b^n/ a^m
Rule of Zero
a^0 = 1
The rule under exponents is to always keep the exponents positive.
Product Rule:
a^m * a^n = a^(m+n)
Quotient Rule
a^m/ a^n = a ^(m-n)
Power Rule
(a^m)^n
= a^(mn)
Negative Exponents
a^-m = 1/a^m
1/a^-m = a^m
With different bases :
a^-m / b^-n
= b^n/ a^m
Rule of Zero
a^0 = 1
The rule under exponents is to always keep the exponents positive.
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