Question

determinati valoarea numerica pentru expresia E=4,5×a-0,21×b daca a=10,5×2,3+1,2×3,5 si b=1,1²+2,5.

Va rog ajutati-ma !!

Answer 1

E=4,5×(10,5×2,3+1,2×3,5)-0,21×(1,1^2+2,5)
E=4,5×(24,15+4,2)-0,21×(1,21+2,5)
E=4,5×28,35-0,21×3,71 E= 127,575-0,7791 E= 128.3541