2p^2-1=8

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Solution for 2p^2-1=8 equation: 


Simplifying
2p2 + -1 = 8

Reorder the terms:
-1 + 2p2 = 8

Solving
-1 + 2p2 = 8

Solving for variable 'p'.

Move all terms containing p to the left, all other terms to the right.

Add '1' to each side of the equation.
-1 + 1 + 2p2 = 8 + 1

Combine like terms: -1 + 1 = 0
0 + 2p2 = 8 + 1
2p2 = 8 + 1

Combine like terms: 8 + 1 = 9
2p2 = 9

Divide each side by '2'.
p2 = 4.5

Simplifying
p2 = 4.5

Take the square root of each side:
p = {-2.121320344, 2.121320344}

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