Question

Determinați termenul necunoscut x,știind că: (8⁵)⁴⁰=2³⁰-^×​

Answer 1

(8^5)^40 = 2^(30-x)

[(2^3)^5]^40 = 2^(30-x)

(2^15)^40 = 2^(30-x)

2^600 = 2^(30-x)

600 = 30 - x

-x = 600 - 30 = 570

x = -570

Answer 2

(8⁵)⁴⁰ =  (2³⁰⁻ˣ

(2³)⁵⁾⁴⁰ = (2³⁰⁻ˣ

(2¹⁵)⁴⁰ = 2³⁰⁻ˣ

2⁶⁰⁰ = 2³⁰⁻ˣ

600 = 30 - x

x = 30 - 600

x = - 570