For what values of m can the expression 2x2 + mxy + 3y2 - 5y - 2 be expressed as the product of two linear factors?
0
49
Let be the roots of the equation x2 - ax + b = 0 and . Then, An + 1 - aAn + bAn - 1 is equal to
- a
b
0
a - b
C.
0
If b2 4ac for the equation ax4 + bx2 + c = 0, then all the roots of the equation will be real if:
b > 0, a < 0, c > 0
b < 0, a > 0, c > 0
b > 0, a > 0, c > 0
b > 0, a > 0, c < 0