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Exercise

$8x^2-13y^2+6x^2-7-y^2-4$

Step-by-step Solution

1

Subtract the values $-7$ and $-4$

$8x^2-13y^2+6x^2-11-y^2$
2

Combining like terms $8x^2$ and $6x^2$

$14x^2-13y^2-11-y^2$
3

Combining like terms $-13y^2$ and $-y^2$

$14x^2-14y^2-11$

Final answer to the exercise

$14x^2-14y^2-11$

Try other ways to solve this exercise

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  • Solve by quadratic formula (general formula)
  • Find the derivative using the definition
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$5a-6b+8c+9a-20c-b+6b-c$

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Main Topic: Equivalent Expressions

Two algebraic expressions are equivalent if they stay equal to each other, for any values their variables can take.

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