簡約 a[13]+a[7]*a[20]-a 13/100 a[2]

解

簡約

a [13] + a [7] \cdot a [20] - a \frac{13}{100} a [2]

13 a + \frac{6987}{50} a^{2}

解答ステップ

a (13) + a (7) a (20) - a \frac{13}{100} a (2)

簡素化

a (13) + a (7) a (20) - a \frac{13}{100} a (2) : a \cdot 13 + a \cdot 7 a \cdot 20 - a \frac{13}{100} a \cdot 2

= a \cdot 13 + a \cdot 7 a \cdot 20 - a \frac{13}{100} a \cdot 2

共通項をくくり出す

aa : aa (7 \cdot 20 - \frac{13}{100} \cdot 2)

= a \cdot 13 + aa (7 \cdot 20 - \frac{13}{100} \cdot 2)

簡素化

aa (7 \cdot 20 - \frac{13}{100} \cdot 2) : a^{2} \frac{6987}{50}

= a \cdot 13 + a^{2} \frac{6987}{50}

= 13 a + \frac{6987}{50} a^{2}