Mom, You Peed on My Foot!: Putting up a positive fight against ALS.

Mom, You Peed on My Foot!: Putting up a positive fight against ALS.

Matematika Sekolah Menengah Atas Kuis +50:
Himpunan penyelesaian ⁵log(x²+9) = 2
adalah x₁ dan x₂ maka nilai x₁ + x₂ = ?

Kuis +50:
Himpunan penyelesaian ⁵log(x²+9) = 2
adalah x₁ dan x₂ maka nilai x₁ + x₂ = ?

⁵log(x²+9) = 2

x² + 9 = 5²

x² + 9 = 25

x² = 25 - 9

x² = 16

x = ±√16

x1 = -4

x2 = 4

.....

Maka,

x₁ + x₂

= -4 + 4

= 0

Jawaban:

⁵log(x² + 9) = 2

x² + 9 = 5²

x² + 9 = 25

x² = 25 - 9

x² = 16

x = 4

⁵log(x² + 9) = 2

-x² + 9 = 5²

-x² + 9 = 25

- x² = - (25 - 9)

- x² = - 16

-x = - √16

-x = -4

{-4,4} = -4 + 4 = 0

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