In this activity, we are going to incorporate expanding single brackets with using the laws of indices.
Let's recap both first!
Expanding brackets - everything inside the bracket gets multiplied by whatever is outside the bracket.
Laws of Indices
Multiplying, when the base is the same we add the powers.
Adding the powers saves us writing the whole thing out as in the example above!
Let's put both topics together now and look at a typical question!
e2 (e + e3)
Expand the bracket.
e2 x e = e3 Remember that if there is no power, it is to the power of 1.
e2 x e3 = e5
Answer is e3 + e5
Let's try some questions!