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受欢迎的代数 >

-4=(5x^2*7)/(2(a+3))

解答

- 4 = \frac{5 x ^{2} \cdot 7}{2 ( a + 3 )}

解答

x = i \frac{2 70 3 + a}{35}, x = - i \frac{2 70 3 + a}{35}; a \neq = - 3

求解步骤

- 4 = \frac{5 x ^{2} \cdot 7}{2 ( a + 3 )}

交换两边

\frac{5 x ^{2} \cdot 7}{2 ( a + 3 )} = - 4

在两边乘以

2 (a + 3)

35 x^{2} = - 8 (a + 3); a \neq = - 3

两边除以

35; a \neq = - 3

x^{2} = - \frac{8 ( a + 3 )}{35}; a \neq = - 3

对于

x^{2} = f (a)

解为

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

x = - \frac{8 ( a + 3 )}{35}, x = - - \frac{8 ( a + 3 )}{35}; a \neq = - 3

化简

- \frac{8 ( a + 3 )}{35} : i \frac{2 70 3 + a}{35}

化简

- - \frac{8 ( a + 3 )}{35} : - i \frac{2 70 3 + a}{35}

x = i \frac{2 70 3 + a}{35}, x = - i \frac{2 70 3 + a}{35}; a \neq = - 3

作图

流行的例子

- (x - 5)^{2} + 25 = 0

5 x^{2} + 8 x = - 3

x = (x - 1)^{2}

solvefor x,f=x^2+xyz+z

so l v e f or x, f = x^{2} + x yz + z

x^{2} - 2 = 2 - 3 x