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You can expand the first expression in parentheses, then add or subtract like terms.

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The answer is 14x^3 - x^2 - 4.

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Q: (9xcubed-3) - (4xsquared plus 4) plus (5xcubed plus 5xsquared)?

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5xcubed

It is: 2xsquared+14x-9

5x^2 + 14x - 3x^2 - 9 = 2x^2 + 14x - 9

4X2+X3+3X+7Y+2X3 can only be simplified to 3X3+4X2+3X+7Y, because X3 and 2X3 are the only like terms.

This may be copied wrong, but as written that equals 4x^2-15x which factors to x(4x - 15)

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5xcubed

(2x - 5)(2x - 3)

5x2 + x + 7 cannot be simplified.

It is: 2xsquared+14x-9

68

It is a quadratic equation and the values of x are: -1/2 and 6

No, anything that is x^2 and y^2 is circular.

35 + 40x + 5x2 = 5(7 + 8x + x2) = 5(7 + x)(1 + x)

4X2+X3+3X+7Y+2X3 can only be simplified to 3X3+4X2+3X+7Y, because X3 and 2X3 are the only like terms.

4x2 - 20x + 16 = 4(x2 - 5x + 4) = 4(x - 1)(x - 4)

This may be copied wrong, but as written that equals 4x^2-15x which factors to x(4x - 15)

5x^2 + 14x - 3x^2 - 9 = 2x^2 + 14x - 9