How do you simplify $(10x^3 - 4x^2 + 3x) - (x^3 - x^2 + 1)$ ?

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Answer 1 · 2016-08-10T20:25:06

$9x^3 - 3x^2 + 3x - 1$

Remove the brackets, notice that the minus sign will change the signs inside the second bracket:

$(10x^3 - 4x^2 + 3x) - (x^3 - x^2 + 1)$

= $10x^3 - 4x^2 + 3x - x^3 + x^2 -1 " collect like terms"$

= $9x^3 - 3x^2 + 3x - 1$

How do you simplify (10x^3 - 4x^2 + 3x) - (x^3 - x^2 + 1)(10x^3 - 4x^2 + 3x) - (x^3 - x^2 + 1)?