Given that the quadratic equation x^2 + 7x + 13 = 0 has roots a and b, find the value of a+b and ab.
Remember that for a general quadratic equation Ax^2 + Bx + C = 0, the sum of the roots = -B/A and the product of the roots = C/A.In our question, A = 1, B = 7, C = 13.So a + b = -7/1 = -7 and ab = 13/1 = 13
NT
Answered by Nathan T. • Further Mathematics tutor
3448 Views
See similar Further Mathematics A Level tutorsRelated Further Mathematics A Level answers
All answers ▸Use algebra to find the set of values of x for which mod(3x^2 - 19x + 20) < 2x + 2.
How do I integrate (sin x)^6?
A line has Cartesian equations x−p = (y+2)/q = 3−z and a plane has equation r ∙ [1,−1,−2] = −3. In the case where the angle θ between the line and the plane satisfies sinθ=1/√6 and the line intersects the plane at z = 0. Find p and q.
How would you use the Integration Factor method to solve an ordinary first-order linear differential equation?