1.If the equation x2+bx+45=0x^2 + bx + 45 = 0x2+bx+45=0, b∈Rb \in \mathbb{R}b∈R has conjugate complex roots and they satisfy ∣z+1∣=210|z + 1| = 2\sqrt{10}∣z+1∣=210, then:a.b2−b=30b^2 - b = 30b2−b=30b.b2+b=72b^2 + b = 72b2+b=72c.b2−b=42b^2 - b = 42b2−b=42d.b2+b=12b^2 + b = 12b2+b=12Login to continueOnly logged in users canattempt or see the solution.
