👤

DAU COROANA
Descompune in factori: 14a - 49a² + 100b²-1


Răspuns :

14a-49a^2+100b^2-1=100b^2-(49a^2-14a+1)=(10b)^2-(7a-1)^2=(10b-7a+1)(10b+7a-1).
14a - 49 [tex] a^{2} [/tex] +100[tex] b^{2} [/tex] - 1

a (7+7) - [tex] (-7a)^{2} [/tex]+[tex] (10b)^{2} [/tex] -1