2a^2+5=7

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Solution for 2a^2+5=7 equation:


Simplifying
2a2 + 5 = 7

Reorder the terms:
5 + 2a2 = 7

Solving
5 + 2a2 = 7

Solving for variable 'a'.

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

Add '-5' to each side of the equation.
5 + -5 + 2a2 = 7 + -5

Combine like terms: 5 + -5 = 0
0 + 2a2 = 7 + -5
2a2 = 7 + -5

Combine like terms: 7 + -5 = 2
2a2 = 2

Divide each side by '2'.
a2 = 1

Simplifying
a2 = 1

Take the square root of each side:
a = {-1, 1}

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