Q178 of 196 Page 249

If a = – 1, b = 2, then find the value of the following:
a^b ÷ b^a

By substituting the values of a and b in given equation, we get,

⇒ (-1)² ÷ (2)^-1

As we know by the property of negative exponents,

∴ the value of given expression is 2

178

If a = – 1, b = 2, then find the value of the following:

a^b – b^a

178

If a = – 1, b = 2, then find the value of the following:

a^b × b²

179

Express each of the following in exponential form:

179

Express each of the following in exponential form:

If a = – 1, b = 2, then find the value of the following:ab ÷ ba