Bill and Jenna are solving the quadratic equation x^2 0 x = 12.

Bill solved this way

x^2 0 x = 12

x (x 0 1) = 12

x = 12 or 13

Jenna solved this way

x^2 0 x = 12

x^2 0 x 0 12 = 0

(x 0 4) (x + 3) = 0

x = 4 or x = 03

Which student is correct?

What error did the other student make when solving?

Question

Mathematics

Chris Daugherty

2 October, 18:38

Bill and Jenna are solving the quadratic equation x^2 0 x = 12.

Bill solved this way

x^2 0 x = 12

x (x 0 1) = 12

x = 12 or 13

Jenna solved this way

x^2 0 x = 12

x^2 0 x 0 12 = 0

(x 0 4) (x + 3) = 0

x = 4 or x = 03

Which student is correct?

What error did the other student make when solving?

+3

Answers (1)

Know the Answer?

Lindsay Oneal · Answer 1

I'm assuming the 0s are negative signs.

Anyway, Jenna did the correct way to solve it. Bill didn't solve the quadratic equation correctly because he didn't proceed to solving for the zeros of the equation - which Jenna did.

Bill and Jenna are solving the quadratic equation x^2 0 x = 12.Bill solved this wayx^2 0 x = 12x (x 0 1) = 12x = 12 or 13Jenna solved this wayx^2 0 x = 12x^2 0 x 0 12 = 0(x 0 4) (x + 3) = 0x = 4 or x = 03Which student is correct?What error did the other student make when solving?