If a + b ,= 5 and a b = 6 . Find 1 a </mfrac> +

Erin Lozano

Erin Lozano

Answered question

2022-06-16

If a + b,= 5 and a b = 6 . Find 1 a + 1 b
Any Ideas on how to begin?
Many Thanks

Answer & Explanation

humusen6p

humusen6p

Beginner2022-06-17Added 22 answers

1 a + 1 b = a + b a b = 5 6
April Bush

April Bush

Beginner2022-06-18Added 6 answers

Since a + b = 5 and a b = 6, then a , b can be the roots of polynomial x 2 5 x + 6 = 0
By fraction, ( x 2 ) ( x 3 ) = 0
Out of symmetry, let a = 2 , b = 3 , so 1 a + 1 b = 5 6

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