Explicație pas cu pas:
b2=b1 ×q
-4=2×q
-4/2=q
q=-2
b3=b2×q
b3=-4×(-2)
b3= 8
b4=b3×q= 8×(-2)=-16
b5=b4×q=-16×(-2)=32
b6=b5×q=32×(-2)=-64
B6= -64
Răspuns:
b1 = 2
b2 = -4
b2 = b1*q
q = b2 : b1 = -4 : 2 = -2
b3 = b2*q = b1*q^2
b4 = b3*q = b1*q^3
b5 = b4*q = b1*q^4
b6 = b5*q = b1*q^5 = 2*(-2)^5 = 2*(-32) = -64
