Answer:
7x2 - 25y2 - 22x
Step-by-step explanation:
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The difference of polynomials (12x²-11y²-13x)-(5x²-14y²-9x) is 7x² +3y²-4x
Polynomials are sum of terms of the form kxⁿ , where k is a constant and n is any positive integer.
it is given in the question
To find the difference of the polynomials
(12x²-11y²-13x)-(5x²-14y²-9x)
to add or subtract a polynomial we subtract the like terms with same variable .
12x²-11y²-13x -5x²+14y²+9x
7x² +3y²-4x
Therefore the difference of polynomials (12x²-11y²-13x)-(5x²-14y²-9x) is 7x² +3y²-4x .
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