Solve for y y=(a-8)/(a^2+28a+196)

Math
y=a-8a2+28a+196
Rewrite 196 as 142.
y=a-8a2+28a+142
Check the middle term by multiplying 2ab and compare this result with the middle term in the original expression.
2ab=2⋅a⋅14
Simplify.
2ab=28a
Factor using the perfect square trinomial rule a2+2ab+b2=(a+b)2, where a=a and b=14.
y=a-8(a+14)2
Solve for y y=(a-8)/(a^2+28a+196)

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