Question

De rezolvat acest exercitiu. Multumesc.

Answer 1

a) D(4) = 1*2*4² + 1*4*1 + 1*4*1 - 1*2*1 - 1*1*4² - 4*4*1 = 32+4+4-2-16-16 = 6

b) D(m) = 2m²+m+4-2-m²-4m = m²-3m+2

=> m²-3m+2 = 0

Delta = 9-4*1*2 = 1

m1 = (3+1)/2 = 2

m2 = (3-1)/2 = 1