Question

find x so that (-5)^x+2×(-5)^6=(-5)^9​

Answer 1

Answer:

(-5)x+² × (-5)⁶ = (-5)⁹

(-5)x+²+⁶ =(-5)⁹

(-5)x+⁸ =(-5)⁹ (-5,-5 will cancel out)

so,

x+⁸= ⁹

x = ⁹-⁸

x= 1 ans :)