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a fost răspuns

Grupand convenabil,descompuneti in factori:
ac-ad+bc-bd;
x²+x²z+2xz²+2z³;
x³-x²z+2xz²-2z³;
x³+x²z-2xz²-2z³;
a³+2a²+2a+4;
a³-2a²+2a-4.
Va rog mult!!

Răspuns :

Danaradu70
a(c-d)+b(c-d)=(c-d)(a+b)

x^2(x-z)+2z^2(x-z)=(x-z)(x^2+2z^2)

x^2(x-z)-2z^2(x-z)=(x-z)(x^2-2z^2)

x^2(x+z)-2z^2(x+z)=(x+z)(x^2-2z^2)

a^2(a+2)+2(a+2)=(a+2)(a^2+2)

a^2(a-2)+2(a-2)=(a-2)(a^2-2)

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