Question

Find the value of the greater root of x2 - 6x + 5 = 0.

A) -5
B) -1
C) 1
D) 5

Answer 1

D

Explanation:

We need to find 2 roots of the quadratic function given and find the greater of the two roots.

We factorize the quadratic and find the two solutions first:

`x^2-6x+5=0\\(x-5)(x-1)=0\\x=1,5`

So,

x = 1

and

x= 5

Out of the two, x = 5 is the greater root.

D is the correct answer.