First Law of Indices

- If there is no visible sign before a number, the invisible sign is PLUS e.g. 8 means +8
- If two numbers have the same signs in front of them, the answer has that sign and you ADD the two numbers e.g. -1-2=-3 and 4+3=7
- If two numbers have opposite signs in front of them, the answer has the sign of the larger number and you SUBTRACT the smaller number from the larger number e.g. 4-7=-3 and 8-7= 1
- If the two numbers are equal in value but have different signs in front of them, then the result is zero e.g. -9+9= 0 and 15-15=0

Related to Sample Lesson

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First Law of Indices

t^{10q}

7q^{t}

t^{52q}

t^{7q}

10q^{t}

-56^{q}

-15^{q}

q^{-56}

q^{-15}

q^{-78}

q^{-93}

q^{-27}

-9q^{3}

q^{-6}

-93^{q}

1

n^{-16}

0

0^{n}

n

n^{32}

n^{12}

-12^{n}

n^{-32}

n^{-12}

0

1

2

3

4

m^{45k}

m^{95k}

m^{14k}

45k^{m}

14k^{m}

14^{h}

h^{9}

2h^{7}

h^{14}

9^{h}

q^{7} x q^{-7} =

q^{-49}

0^{l}

q

1

0

2a^{3p}

3p^{a}

a^{4p}

a^{3p}

4p^{a}