(9y^2-6y+7)-(5y^2-6y+4)=

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Solution for (9y^2-6y+7)-(5y^2-6y+4)= equation:


Simplifying
(9y2 + -6y + 7) + -1(5y2 + -6y + 4) = 0

Reorder the terms:
(7 + -6y + 9y2) + -1(5y2 + -6y + 4) = 0

Remove parenthesis around (7 + -6y + 9y2)
7 + -6y + 9y2 + -1(5y2 + -6y + 4) = 0

Reorder the terms:
7 + -6y + 9y2 + -1(4 + -6y + 5y2) = 0
7 + -6y + 9y2 + (4 * -1 + -6y * -1 + 5y2 * -1) = 0
7 + -6y + 9y2 + (-4 + 6y + -5y2) = 0

Reorder the terms:
7 + -4 + -6y + 6y + 9y2 + -5y2 = 0

Combine like terms: 7 + -4 = 3
3 + -6y + 6y + 9y2 + -5y2 = 0

Combine like terms: -6y + 6y = 0
3 + 0 + 9y2 + -5y2 = 0
3 + 9y2 + -5y2 = 0

Combine like terms: 9y2 + -5y2 = 4y2
3 + 4y2 = 0

Solving
3 + 4y2 = 0

Solving for variable 'y'.

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

Add '-3' to each side of the equation.
3 + -3 + 4y2 = 0 + -3

Combine like terms: 3 + -3 = 0
0 + 4y2 = 0 + -3
4y2 = 0 + -3

Combine like terms: 0 + -3 = -3
4y2 = -3

Divide each side by '4'.
y2 = -0.75

Simplifying
y2 = -0.75

Reorder the terms:
0.75 + y2 = -0.75 + 0.75

Combine like terms: -0.75 + 0.75 = 0.00
0.75 + y2 = 0.00

The solution to this equation could not be determined.

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