Pertanyaan

Bentuk sederhana dari 2 + 2 1 − 2 5 adalah....

Bentuk sederhana dari $\frac{1 - 2 5}{2 + 2}$ adalah....

N. Mustikowati

Master Teacher

Mahasiswa/Alumni Universitas Negeri Jakarta

Jawaban terverifikasi

Pembahasan

$fraction numerator 1 minus 2 square root of 5 over denominator 2 plus space square root of 5 end fraction space space equals space space space fraction numerator 1 minus 2 square root of 5 over denominator 2 plus space square root of 5 end fraction space. space fraction numerator 2 minus space square root of 5 over denominator 2 minus space square root of 5 end fraction space space space space space space space space space space space space space space space space space space equals space fraction numerator 2 minus space square root of 5 minus 4 space square root of 5 plus 10 over denominator 4 minus 5 end fraction space space space space space space space space space space space space space space space space space space equals space fraction numerator 12 minus 5 square root of 5 over denominator negative 1 end fraction space space space space space space space space space space space space space space space space space space equals space minus 12 space plus space 5 square root of 5$