Use a General Strategy for Factoring Polynomials
-$$x ^ { 2 } y - 9 y + 45 - 5 x ^ { 2 }$$

Question

Quizplus · Accepted Answer

First, factor out the greatest common factor, $y$, from the first two terms and $5$ from the last two terms:$$y(x^2-9)+5(9-x^2)$$Then, factor the difference of squares in the first group and the sum of squares in the second group:$$y(x+3)(x-3)+5(3+x)(3-x)$$Finally, factor out the common factor $(x+3)(x-3)$:$$(x+3)(x-3)(y-5)$$

Use a General Strategy for Factoring Polynomials - x2y−9y+45−5x2x ^ { 2 } y - 9 y + 45 - 5 x ^ { 2 }x2y−9y+45−5x2

Use a General Strategy for Factoring Polynomials
- $x ^ { 2 } y - 9 y + 45 - 5 x ^ { 2 }$