How do you combine $(–2x^4 – 3x^2) – (–9x^2 + 4x – 4)$ ?

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Answer 1 · 2018-04-30T08:10:22

$-2x^4+6x^2-4x+4$

Remove the brackets

$(-2x^4-3x^2)-(-9x^2+4x-4)$

$=-2x^4-3x^2+9x^2-4x+4$

$-2x^4+6x^2-4x+4$

How do you combine (–2x^4 – 3x^2) – (–9x^2 + 4x – 4) (–2x^4 – 3x^2) – (–9x^2 + 4x – 4) ?