((43)/(42.5))n^2-n^2=3

解答

(\frac{43}{42.5}) n^{2} - n^{2} = 3

n = \frac{1.99219 E 14}{781250000000}, n = - \frac{1.99219 E 14}{781250000000}

十进制

n = 15.96871 \dots, n = - 15.96871 \dots

求解步骤

(\frac{43}{42.5}) n^{2} - n^{2} = 3

展开

(\frac{43}{42.5}) n^{2} - n^{2} : 0.01176 \dots n^{2}

0.01176 \dots n^{2} = 3

两边除以

0.01176 \dots

n^{2} = 254.99999 \dots

对于

x^{2} = f (a)

解为

x = f (a), - f (a)

n = 254.99999 \dots, n = - 254.99999 \dots

254.99999 \dots = \frac{1.99219 E 14}{781250000000}

- 254.99999 \dots = - \frac{1.99219 E 14}{781250000000}

n = \frac{1.99219 E 14}{781250000000}, n = - \frac{1.99219 E 14}{781250000000}

b (x) = - 9 x - 6 + 4 x^{2}

so l v e f or x, x^{2} + 4 x y - y^{2} + 3 x - 8 y + 2 = 0

4.9 t^{2} + 294 t - 2450 = 0

so l v e f or x, x^{2} - 25 m^{2} = 0

x^{2} - (c + 6) \cdot x + 2 (2 c - 1) = 0