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受欢迎的代数 >

solvefor D,(D^2-4D+5)3(D-3)4y=0

解答

求解

D, (D^{2} - 4 D + 5) 3 (D - 3) 4 y = 0

解答

D = 2 + i, D = 2 - i, D = 3; y \neq = 0

求解步骤

(D^{2} - 4 D + 5) \cdot 3 (D - 3) \cdot 4 y = 0

使用零因数法则： If

ab = 0

then

a = 0

or

b = 0

D^{2} - 4 D + 5 = 0 or D - 3 = 0

解

D^{2} - 4 D + 5 = 0 : D = 2 + i, D = 2 - i

解

D - 3 = 0 : D = 3

解为

D = 2 + i, D = 2 - i, D = 3; y \neq = 0

作图

流行的例子

q^{2} + 3 q - 4 = 0

-0.0013x^2+x+13=0

- 0.0013 x^{2} + x + 13 = 0

X^{2} + 10 X + 21 = 0

-16x^2+272x+204=0

- 16 x^{2} + 272 x + 204 = 0

solvefor x,26406.25=(25-2x)(1000+50x)

so l v e f or x, 26406.25 = (25 - 2 x) (1000 + 50 x)