7x^3+9x^2-5a^2=0

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Solution for 7x^3+9x^2-5a^2=0 equation:


Simplifying
7x3 + 9x2 + -5a2 = 0

Reorder the terms:
-5a2 + 9x2 + 7x3 = 0

Solving
-5a2 + 9x2 + 7x3 = 0

Solving for variable 'a'.

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

Add '-9x2' to each side of the equation.
-5a2 + 9x2 + -9x2 + 7x3 = 0 + -9x2

Combine like terms: 9x2 + -9x2 = 0
-5a2 + 0 + 7x3 = 0 + -9x2
-5a2 + 7x3 = 0 + -9x2
Remove the zero:
-5a2 + 7x3 = -9x2

Add '-7x3' to each side of the equation.
-5a2 + 7x3 + -7x3 = -9x2 + -7x3

Combine like terms: 7x3 + -7x3 = 0
-5a2 + 0 = -9x2 + -7x3
-5a2 = -9x2 + -7x3

Divide each side by '-5'.
a2 = 1.8x2 + 1.4x3

Simplifying
a2 = 1.8x2 + 1.4x3

Reorder the terms:
a2 + -1.8x2 + -1.4x3 = 1.8x2 + -1.8x2 + 1.4x3 + -1.4x3

Combine like terms: 1.8x2 + -1.8x2 = 0.0
a2 + -1.8x2 + -1.4x3 = 0.0 + 1.4x3 + -1.4x3
a2 + -1.8x2 + -1.4x3 = 1.4x3 + -1.4x3

Combine like terms: 1.4x3 + -1.4x3 = 0.0
a2 + -1.8x2 + -1.4x3 = 0.0

The solution to this equation could not be determined.

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