Question

Efetue

a) (2a b²/c³)².(a². c/b)³

b) (3x² y/a³. b³)² : (3x y²/2a² . b²)³

Answer 1

a)

■ (2ab²/c³)² =  4a²b^4/c^6
■ (a²c/b)³ = a^6c^3/b^3

╠>  4a²b^4/c^6 * a^6c^3/b^3 = 4a^8b^4c^3/b^3*c^6 = 4a^8b/c^3

b)  (3x² y/a³. b³)² : (3x y²/2a² . b²)³

■ (3x² y/a³. b³)² = 9x^4y^2/a^6b^6 

■ (3x y²/2a² . b²)³ = 27x^3y^6/8a^6b^6

╠>  (9x^4y^2/a^6b^6) / (27x^3y^6/8a^6b^6) =

  (9x^4y^2/a^6b^6) * (8a^6b^6/27x^3y^6 ) = x/9y^4 * 8 = 8x/9y^4

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01/03/2016 
Sepauto - SSRC
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