Question

Помогите пожалуйста! 1)x^3+y^3/x^2-y^2; 2)2a^3-2b^3/5a^2-5b; 3)m^3-n^3/m^2-n^2; 4)3p^3q^2/6p^2+6q^2; Сроооочно!!!!

Answer 1

$1) \ frac{(x+y)( x^{2} -xy+ y^{2} )}{(x-y)(x+y)} = frac{x^{2} -xy+ y^{2}}{x-y}$
$2) \ frac{2(a-b)( a^{2} +ab+ b^{2} )}{5(a-b)(a+b)} = frac{2( a^{2} +ab+ b^{2} )}{5(a+b)}$
$3) frac{ m^{2} -mn+ n^{2} }{m+n}$
$4) frac{ p^{3} q^{2}}{ 2(p^{2} + q^{2}) }$