If a = – 1, b = 2, then find the value of the following:ab × b2

By substituting the values of a and b in given equation, we get,⇒ (-1)2 × (2)2⇒ 1 × 4 = 4∴ the value of given expression is 4

Q178 of 196 Page 249

If a = – 1, b = 2, then find the value of the following:
a^b × b²

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

⇒ (-1)² × (2)²

⇒ 1 × 4 = 4

∴ the value of given expression is 4

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 – b^a

178

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

a^b ÷ b^a

179

Express each of the following in exponential form: