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9x2 - 6xy + y2 - 81 = (3x - y)2 - 81 (since the first three terms make a perfect square

= (3x - y - 9)(3x - y + 9) since the expression now is a difference of two squares.

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โˆ™ 2011-06-14 16:47:50
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A polynomial of degree zero is a constant term

The grouping method of factoring can still be used when only some of the terms share a common factor A True B False

The sum or difference of p and q is the of the x-term in the trinomial

A number a power of a variable or a product of the two is a monomial while a polynomial is the of monomials

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โˆ™ 2015-08-06 20:52:17

(3x - y - 9)(3x - y + 9)

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Q: How do you factor 9x2-6xy plus y2-81?
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