Find the value of the greater root of x2 - 13x + 12 = 0. a) -12 b) -1 c) 1 d) 12

Option D 12 is the answer.

Step-by-step explanation:

Given is a quadratic equation as

To find the roots we can factorise this

Since last term = 12, and middle term -13 we can split middle term as -12 and -1

We know that there are two roots as 12 and 1.

The bigger root is obviously 12.

Option D is the answer

Verify:

Substitute 12 in the equation and check

Hence our answer is right.

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