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LROUMANE

Explications étape par étape

Exercice 1

19 x 19 x 19 x 19 = 19^4

( - 9 ) x ( - 9 ) x ( - 9 ) = ( - 9 )³

2 x 2 x 2 x 2 x 2 x 2 x 2 = 2^7

Exercice 2

10^5 = 10 x 10 x 10 x 10 x 10 = 100 000

5^4 = 5 x 5 x 5 x 5 = 625

- 5^8 = - 390 625

( - 5 )^8 = 5^8 = 390 625

VINS

bonjour

1)

19 * 19 * 19 * 19 = 19 ⁴

( - 9 ) * ( - 9) * ( - 9) = ( - 9 ) ³

2*2*2*2*2*2*2 = 2 ⁷

2)

10⁵ = 100 000

5 ⁴ = 625

- 5 ⁸ = - 390 625

( - 5 )⁸  = 390 625

3  )

5² x 4 = 5² x 2 ² = 10 ²

( 5 * 4 )² = 20² = 400

3³ x 2 ⁴ = 27*16 =  432

3³ + 2 ⁴ = 27 + 16 = 43

( 5 x)² = 25 x²

( 7 x)² = 49 x²

3³ -  2 ⁴ = 27  - 16 = 11

3³ : 2 ⁴ = 27/16

4)

25 x² - 16

4 x² - 81

5)

1/100 = 10 ⁻²

1/5⁷ = 5 ⁻⁷

1/6 =  6 ⁻¹

1/10 = 10 ⁻¹

4 ⁻³ = 1 /64

10 ⁻⁷ = 1 /10 000 000

continue

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