Question

Ajudaaaaa Porrrr favoooorrrr
Resolva as expressões a seguir: A) 3x10^5x1,5x10^-4 B) 4x10. 5x10^-11/ 8x10^-2 C) 3x10^-11/2x10^-5 D) 4x10^-2/(2x10^-2)^2 E( 2×10^-3 . 4x10^-6 . 1,2 x 10^-6/ (2x10^-2) 3​

Answer 1

A)

3 × 10⁵ ₓ 1,5 ₓ 10⁻⁴

( 3 × 1,5 ) × 10 ⁵⁺⁽⁻⁴⁾

4,5 ₓ 10 ⁵⁻⁴

4,5 × 10¹

B)

4 × 10 × 5 × 10⁻¹¹ / 8 ₓ 10⁻²

(4 ₓ 5 ₓ 10⁻¹¹⁺¹⁺²) /8

(20 ₓ 10⁻⁸ )/ 8

2,5 ₓ 10⁻⁸

C)

(3 ₓ 10⁻¹¹) /2 ₓ 10⁻⁵

(3 ₓ 10 ⁻¹¹⁺⁵ ) /2

(3 ₓ 10⁻⁶) /2

1,5 ₓ 10⁻⁶

D)

(4 ₓ 10⁻²) /(2 ₓ 10⁻²)²

(4 ₓ 10⁻²) / (4 ₓ 10⁻⁴)

(4 ₓ 10⁻²⁺⁴) / 4

1 ₓ 10²