6 more than 3 times what number squares is 81

Question

Will Arnold

Mathematics

22 September, 06:49

6 more than 3 times what number squares is 81

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Answers (1)

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Keagan · Answer 1

When you write that equation, you get 3x^2+6=81.

Solving for x:

Subtract by 6 on both sides of the equation to get 3x^2=75.

Then, divide by 3 on both sides of the equation to get x^2=25.

Finally, do the square root on both sides of the equation to get x=5.

The number is 5.