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Alina [70]
2 years ago
7

Please help...*puppy eyes* (Will pick brainliest)

Mathematics
1 answer:
faust18 [17]2 years ago
8 0

Step-by-step explanation:

Note that the denominators in the expression are perfect squares:

{x}^{2}  - 5xy + 6 {y}^{2}   = (x - 2y)(x  - 3y)

{x}^{2}  - 4xy + 3 {y}^{2}  = (x - y)(x - 3y)

{x}^{2}  - 3xy + 2 {y}^{2}  = (x - y)(x - 2y)

We can then write the given expression as

\frac{1}{ {x}^{2}  - 5xy + 6 {y}^{2} } +  \frac{a}{{x}^{2}  - 4xy + 3{y}^{2} } +  \frac{1}{{x}^{2}  - 3xy + 2{y}^{2}}

\frac{1}{ {x}^{2}  - 5xy + 6 {y}^{2} } +  \frac{a}{{x}^{2}  - 4xy + 3{y}^{2} } +  \frac{1}{{x}^{2}  - 3xy + 2{y}^{2}}

=  \frac{1}{(x - 2y)(x - 3y)}  +  \frac{a}{(x - y)(x - 3y)}  +  \frac{1}{(x - y)(x - 2y)}

= \frac{(x - y)(x - 2y) {(x -3y)}^{2}  + a {(x - y)}^{2} (x - 2y)(x - 3y) + (x - y){(x - 2y)}^{2}(x - 3y) }{ {(x - y)}^{2} {(x - 2y)}^{2} {(x - 3y)}^{2} }

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