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8 November, 19:31

Which algebraic expression is a polynomial with a degree of 5?

3x5 + 8x4y2 - 9x3y3 - 6y5

2xy4 + 4x2y3 - 6x3y2 - 7x4

8y6 + y5 - 5xy3 + 7x2y2 - x3y - 6x4

-6xy5 + 5x2y3 - x3y2 + 2x2y3 - 3xy5

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  1. 8 November, 19:35
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    The degree of a polynomial is the highest exponent or sum of exponents of the variables in the individual terms of a polynomial.

    Looking at each the polynomial:

    3x5 + 8x4y2 - 9x3y3 - 6y5: Degree is 6 (look at the 2nd and 3rd term)

    2xy4 + 4x2y3 - 6x3y2 - 7x4: Degree is 5 (look at 1st, 2nd, and 3rd term)

    8y6 + y5 - 5xy3 + 7x2y2 - x3y - 6x4: Degree is 6 (look at 1st term)

    -6xy5 + 5x2y3 - x3y2 + 2x2y3 - 3xy5: Degree is 6 (look at 1st and last term)

    Therefore, the answer is the second option:

    2xy4 + 4x2y3 - 6x3y2 - 7x4
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