Question

Simplificati:
7^10+2×7^11+3×7^12 : 12×7^12=………
^ - putere
: - supra

Answer 1

scoatem factor comun⇒ 7 la 10(1+2*7+3*7 la2)/12*7 la 12. simplificam prin 7 la10,⇒ (1+14+147)/12*7 la2⇒ 162/12*49 simplificam prin 6⇒27/98