Question

va roggggg imi trebuie urgenttttttt dau coroanaaaaaaaaaaaa plizzzzzzzz​

Answer 1

Răspuns:

Explicație pas cu pas:

a) x²+3x-10=0    x1,2=-3+-√9+40/2=-3+-7/2    x1=-5; x2=2

A(x)=(x-2)(x+5)

B(X)=x²-6x=x(x-6)

b)x=√5-1     A(√5+1)=(√5+1-2)(√5+1+5)=(√5-1)(√5+6)

c)A=(x-4)²         x1=x2=4

d) 10+B(a)=0       10+a²-6a=0       a1,2=3+-√9-10       Δ<0  ecuatia nu are radacini reale