Judy solved the quadratic equation

x2 - 16 = 0 using the following steps.

Step 1:

Step 2:

Step 3:

Step 4:

x² - 16=0

(x-2) (x + 8) = 0

X-2 = 0 or x + 8

x = 2 or x = - 8

Which statement is true about Judy's

method?

A. Judy made a mistake between Steps 1 and 2.

B. Judy made a mistake between Steps 2 and 3.

C. Judy made a mistake between Steps 3 and 4.

D. Judy solve the equation correctly.

Question

Sabrina Frye

Mathematics

1 January, 07:05

Judy solved the quadratic equation

x2 - 16 = 0 using the following steps.

Step 1:

Step 2:

Step 3:

Step 4:

x² - 16=0

(x-2) (x + 8) = 0

X-2 = 0 or x + 8

x = 2 or x = - 8

Which statement is true about Judy's

method?

A. Judy made a mistake between Steps 1 and 2.

B. Judy made a mistake between Steps 2 and 3.

C. Judy made a mistake between Steps 3 and 4.

D. Judy solve the equation correctly.

+5

Answers (2)

Know the Answer?

Zion Bond · Answer 1

I think it's D

Step-by-step explanation:

Because all of them are true

Marianna · Answer 2

A. Judy made a mistake between Steps 1 and 2.

She did not factor x² - 16=0 correctly.

x² - 16=0 is factored as:

(x + 4) (x-4) = 0

Therefore, x = - 4 and x = 4