Susu is solving the quadratic equation 4x2 – 8x – 13 = 0 by completing the square. her first four steps are shown in the table. in which step did susu first make an error? step 1 step 2 step 3 step 4

Step 3

Step-by-step explanation:

when solving by completing the square you are supposed to do (b/2)^2 and then add that to both sides.

In your example (-8/2)^2=16

You are supposed to add sixteen to both sides not 64

Susu forgot to divide 8 by 2 before she raised it to the to the second powerm that is why she got 64, which is incorrect.

Step 2

Step-by-step explanation:

Susu is solving the quadratic equation by completing the square

To apply completing the square method we need to get x^2 alone

Susu added 13 on both sides . So step 1 is correct

When we factor out 4, we divide both terms by 4

Susu forgot to divide 8 by 4

So , error in step 2

30 feet

step-by-step explanation:

that would be 2 1/2 * 12

= 24 + 6

= 30 feet   (answer)

explanation:

step-by-step explanation: