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Pertanyaan

Jika a 2 = 4 , maka a + b + c = ....

begin mathsize 14px style square root of a open parentheses square root of b plus square root of c close parentheses equals square root of 6 plus square root of 22 end style

Jika , maka + b + c = ....

  1. 6

  2. 14

  3. 16

  4. 28

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N. Ayu

Master Teacher

Mahasiswa/Alumni Universitas Negeri Padang

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Pembahasan

Selanjutnya substitusi : Maka b = 3 dan c = 11 Sehingga a + b + c = 2 + 3 + 11 = 16

begin mathsize 14px style a squared equals 4 a equals √ 4 a equals 2 end style

Selanjutnya substitusi :

begin mathsize 14px style square root of a open parentheses square root of b plus square root of c close parentheses equals square root of 6 plus square root of 22 square root of 2 open parentheses square root of b plus square root of c close parentheses equals square root of 6 plus square root of 22 open parentheses square root of b plus square root of c close parentheses equals fraction numerator open parentheses square root of 6 plus square root of 22 close parentheses over denominator square root of 2 end fraction open parentheses square root of b plus square root of c close parentheses equals fraction numerator square root of 6 over denominator square root of 2 end fraction plus fraction numerator square root of 22 over denominator square root of 2 end fraction open parentheses square root of b plus square root of c close parentheses equals square root of 3 plus square root of 11 end style

Maka

= 3 dan = 11

Sehingga

a + b + c = 2 + 3 + 11 = 16

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