(1+5i)(1+5i)+20=2(1+5i-3)

解答

(1 + 5 i) \cdot (1 + 5 i) + 20 = 2 \cdot (1 + 5 i - 3)

真

求解步骤

(1 + 5 i) (1 + 5 i) + 20 = 2 (1 + 5 i - 3)

化简

(1 + 5 i) (1 + 5 i) + 20 : - 4 + 10 i

化简

2 (1 + 5 i - 3) : - 4 + 10 i

- 4 + 10 i = - 4 + 10 i

两侧相等

真

6 + 3 (2 x - 7) - 2 x = 5 x

180 = \frac{5}{9} (F - 32)

12 + \frac{1}{4} x - 15 = - 18 - \frac{1}{2} x

x = 0.83 - 1.96 \cdot \frac{0.87 \cdot 0.13}{150}

so l v e f or b, - 1.72588 = 10 lo g_{10} (a) + 23.54946 b