D f : x = 0 ∧ x = − 3 D f : x ∈ R ∖ { − 3 , 0 } x 17 − x + 3 11 = x + 3 5 x + 8 ∣ ⋅ x ( x + 3 ) 17 ( x + 3 ) − 11 x = x ( 5 x + 8 ) 17 x + 51 − 11 x = 5 x 2 + 8 x 5 x 2 + 2 x − 51 = 0 5 x 2 − 15 x + 17 x − 51 = 0 5 x ( x − 3 ) + 17 ( x − 3 ) = 0 ( 5 x + 17 ) ( x − 3 ) = 0 x = − 5 17 ∨ x = 3
To solve the equation x 17 − x + 3 11 = x + 3 5 x + 8 , multiply by the common denominator to eliminate fractions, combine like terms, and apply the quadratic formula. The resulting solutions are x = 3 and x = − 5 17 . Always check your solutions by plugging them back into the original equation to ensure their validity.
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