h^2=7^2+4^2

解答

h^{2} = 7^{2} + 4^{2}

h = 65, h = - 65

十进制

h = 8.06225 \dots, h = - 8.06225 \dots

求解步骤

h^{2} = 7^{2} + 4^{2}

化简

7^{2} + 4^{2} : 65

对于

x^{2} = f (a)

解为

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

h = 65, h = - 65

4 q^{2} + 3 q = 3 q^{2} - 2 q + 14

\frac{3 x ^{2} + 8 x + 8}{24} - \frac{x ( x - 3 )}{4} = x

2 y^{2} + y - 1 = 0, 2 sin^{2} (x) + sin (x) - 1 = 0

(- x - 2)^{2} + x^{2} + 6 (- x - 2) - 6 x + 14 = 0

5 y^{2} + 24 y = 0