lamxalkushal19 lamxalkushal19
  • 14-08-2021
  • Mathematics
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when 7 is subtracted from two third of the square of a number it becomes 17 find the number​

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caylus
caylus caylus
  • 14-08-2021

Answer:  6 or -6

hello,

Step-by-step explanation:

Let say n the number

[tex]\dfrac{2}{3} *n^2-7=17\\\Longrightarrow\ \dfrac{2}{3} *n^2=24\\\Longrightarrow\ n^2=\dfrac{3*24}{2}\\\Longrightarrow\ n^2=36\\\Longrightarrow\ (n-6)(n+6)=0\\\\n=6\ or\ n=-6\\[/tex]

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