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
3537 Views
See similar Further Mathematics A Level tutorsRelated Further Mathematics A Level answers
All answers ▸Find the volume of revolution about the x-axis of the curve y=1/sqrt(x^2+2x+2) for 0<x<1
Integrate (x+4)/(x^2+2x+2)
How can the integrating factor method be derived to give a solution to a differential equation?
Given z=cosx+isinx, show cosx=1/2(z+1/z)