Question

a to the power-1 × b to the power-1=(ab) to the power x.find x

Answer 1

${a}^{ - 1} \times {b}^{ - 1} = {ab}^{x}$

when power are same multiplied product have also same power

${ab}^{ - 1} = {ab}^{x}$

now, when base are same and equate then power will also same

so,

x= -1.