Question

${x}^{2} - kx + 16 = 0$
the roots of this equation are A & B. If B =4A ,then find the value of K.

Answer 1

Hope it helps you....

Answer 2

A+4A=k
5A=k then A=k/5
A*4A=16
A^2 =4
A=+/-2
K/5=+/-2 then k=+-10