Question

afla valarea produsului daca.a=4 (a-1)x (a-b)x (a-3)=

Answer 1

a=4 inseamnca ca inlocuim in relatia (a-1)(a-b)(a-3) vom avea
(4-1)(4-b)(4-3)=
3(4-b)x1=
12-3b=0
-3b=-12   (-1)
b=12/3=4
(4-1)(4-4)(4-3)=
3x0x1=0

Answer 2

(a-1)x(a-2)x(a-3)=(4-1)x(4-2)x(4-3)=3x2x1=6