gilmarp0210a gilmarp0210a

01-06-2021
Mathematics

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Soren solves the quadratic equation x^2 + 8x – 9 = 0 using the quadratic formula. In which step did Soren make an error?

Soren solves the quadratic equation x2 8x 9 0 using the quadratic formula In which step did Soren make an error class=

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asmaNasr asmaNasr

01-06-2021

Answer:

step 3 didn't divide by 2

Step-by-step explanation:

in step

[tex] \frac{ - 8 + \sqrt{100} }{2} = \frac{ - 8 + 10}{2} = 1 \\ \frac{ - 8 - \sqrt{100} }{2} = \frac{ - 8 - 10}{2} = - 9[/tex]

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