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受欢迎的代数 >

x^2-9+14=0

解答

x^{2} - 9 + 14 = 0

解答

x = 5 i, x = - 5 i

求解步骤

x^{2} - 9 + 14 = 0

将

9

到右边

x^{2} + 14 = 9

将

14

到右边

x^{2} = - 5

对于

x^{2} = f (a)

解为

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

x = - 5, x = - - 5

- 5 = 5 i

- - 5 = - 5 i

x = 5 i, x = - 5 i

作图

流行的例子

2(5-x)+x>= 2x+1

2 (5 - x) + x \geq 2 x + 1

(x)^2+(21)^2=(29)^2

(x)^{2} + (21)^{2} = (29)^{2}

(5 x - 2)^{2} - 6 = 0

化简-2*3^{-(2)}

s im pl i f y - 2 \cdot 3^{- (2)}

2 x^{2} + 8 = 0