srobins721 srobins721

03-02-2021
Mathematics

contestada

what is the solution set for 2n squared +7n-9=0

Respuesta :

rorycampbell0721 rorycampbell0721

03-02-2021

Answer:

n = 1, -9/2

Step-by-step explanation:

[tex]2n^2 + 7n - 9=0[/tex]

[tex]2n^2 - 2n + 9n - 9=0\\2n (n - 1) + 9(n - 1)=0\\(n-1)(2n+9)=0[/tex]

[tex]n-1=0\\or \\2n+9=0[/tex]

[tex]n = 1, -9/2[/tex]

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