Question

Subpunctul b) va rog !​

Answer 1

Explicație pas cu pas:

$2a {}^{3} + 2ab {}^{2 } - 2b(a {}^{3} + 2ab) + 3ab {}^{2}$

$2a {}^{3} b + 2ab {}^{2} - (2ba {}^{3} + 4b { }^{2} a) + 3ab {}^{2}$

$2a {}^{3} b + 2ab {}^{2} - 2ba {}^{3} - 4b {}^{2} a + 3ab {}^{2}$

$(2a {}^{3} b - 2a {}^{3} b) + (2ab {}^{2} - 4ab {}^{2} + 3ab {}^{2} )$

$ab {}^{2}$

Answer 2

2a^3b^2-2ba^3-4ab^2+3ab^2=