(7la putera a4+2•7la puterea a5+3•7la puterea6):162


Răspuns :

(7⁴+2*7⁵+3*7⁶):162=7⁴*(1+2*7+3*7²):162=7⁴*(1+14+147):162=7⁴*162:162=7⁴=2401