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MathematicsMathematics
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)
  1. 1 January, 07:17
    0
    I think it's D

    Step-by-step explanation:

    Because all of them are true
  2. 1 January, 07:20
    0
    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
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Home » Mathematics » 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.
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