Question

Find the value of the greater root of x^2 - 13x + 12 = 0.
A) -12
B) -1
C) 1
D) 12

Answer 1

Factor the equation out

Answer 2

Do you know how to do that?

Answer 3

no

Answer 4

Yikes okay

What are the factors of 12

Answer 5

1,2,3,4,6,12

Answer 6

List them off in pairs though

Answer 7

erm what?

Answer 8

Do you knows what pairs are?

Answer 9

is it were you go
1x12=12
2x6=12
3x4=12
6x2=12

Answer 10

Yes


Okay which of the two factors add up to 13?

Answer 11

Also your pairs are

1, 12
2, 6
3, 4

Answer 12

1, 12

Answer 13

Good (since we have a -13, use change the signs of them to both negative)

(x-1)(x-12)=0

do you know how to solve the roots from here?

Answer 14

wouldnt the answer be 1 and 12 again though

Answer 15

Yep

Which is greater?

That is your answer