Question

va rog mult ajutati-ma!macar la unul!

Answer 1

b) 4a^4 - 25b^2 = (2a^2)^2 - (5b)^2 = (2a^2 - 5b)(2a^2 + 5b) = ($\sqrt{2} a - \sqrt{5b} )( \sqrt{2} a + \sqrt{5b} )( 2a^2 + 5b ); daca$ a ≥ 0 si b ≥ 0 ; am aplicat formula de calcul prescurtat de 2 ori, x^2 - y^2 = ( x - y )( x + y );
Bafta!

Answer 2

Descompunere in factori ireductibili ...