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Simplify: (9×^3+2×^2-5×+4)-(5×^3-7×+4)
To simplify the given expression, we first need to combine like terms:
(9x^3 + 2x^2 - 5x + 4) - (5x^3 - 7x + 4)
Combine like terms with the same exponent:
9x^3 - 5x^3 = 4x^3
2x^2
- 5x
- 7x
4
Combine all terms:
4x^3 + 2x^2 - 12x + 4
The simplified expression is:
4x^3 + 2x^2 - 12x + 4