Question

What should be the value of b in x^(2) + bx − 55 = 0 so that its solutions are −11 and 5? (1 point)

Answer 1

If the roots are -11 and 5, their sum is -11 + 5 = -6. For x^2 + bx - 55 = 0 the sum of roots = -b, so -b = -6 ⇒ b = 6.