sophiehopkins sophiehopkins
  • 19-02-2018
  • Mathematics
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Will mark Brainliest!! HELP!! Has to be a legit answer!

Will mark Brainliest HELP Has to be a legit answer class=

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Banabanana
Banabanana Banabanana
  • 20-02-2018
[tex](a)\\ \\ \frac{2}{3}x^2+1=55 \\ \\\frac{2}{3}x^2=54 \\ \\ x^2=54\cdot \frac{3}{2} \\ \\ x^2= 81 \\ \\ x=б \sqrt{81} \\ \\ x_1=- 9\\ \\ x_2=9\\ \\ \\ (b) \\ \\ -2y^3-5=49 \\ -2y^3=49+5 \\-2y^3=54\\y^3= \frac{54}{-2} \\ y^3=- 27 \\ y^3= (-3)^3 \\ y=-3[/tex]
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