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Pertanyaan

J ika x 1 ​ d an x 2 ​ aka r − aka r d a r i p ers amaan 3 x + 3 3 − x − 20 = 0 maka jumlah kedua akar tersebut adalah ......

maka jumlah kedua akar tersebut adalah ......

  1. 0

  2. 3

  3. log open parentheses 3 close parentheses

  4. blank cubed log open parentheses 3 close parentheses

  5. blank cubed log open parentheses 14 close parentheses

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D. Kamilia

Master Teacher

Mahasiswa/Alumni Universitas Negeri Malang

Jawaban terverifikasi

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Pembahasan

3 to the power of x plus 3 to the power of 3 minus x end exponent minus 28 equals 0  a to the power of m over a to the power of n equals a to the power of m minus n end exponent  3 to the power of x plus 3 cubed over 3 to the power of x minus 28 equals 0  M i s a l space 3 to the power of x equals y  3 to the power of x plus 3 cubed over 3 to the power of x minus 28 equals 0  y plus 3 cubed over y minus 28 equals 0  y squared minus 28 y plus 27 equals 0  left parenthesis y minus 27 right parenthesis left parenthesis y minus 1 right parenthesis equals 0  y equals 27 rightwards arrow 3 to the power of x equals 27 rightwards arrow x equals 3  y equals 1 rightwards arrow 3 to the power of x equals 1 rightwards arrow x equals 0  M a k a space j u m l a h space a k a r minus a k a r n y a space 3 plus 0 equals 3

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106

DelNur

cukup

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Pertanyaan serupa

A ka r − aka r p ers amaan 2 x 3 − 3 x 2 − 11 x + p = 0 a d a l ah x 1 ​ , x 2 ​ , d an x 3 ​ . U n t u k x 1 ​ = − 2 , ni l ai x 1 ​ x 2 ​ x 3 ​ a d a l ah ...

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