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受欢迎的代数 >

X^2-49=0

解答

X^{2} - 49 = 0

解答

X = 7, X = - 7

求解步骤

X^{2} - 49 = 0

将

49

到右边

X^{2} = 49

对于

x^{2} = f (a)

解为

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

X = 49, X = - 49

49 = 7

- 49 = - 7

X = 7, X = - 7

作图

流行的例子

(y^2-3)/2+y/4 =1

\frac{y ^{2} - 3}{2} + \frac{y}{4} = 1

n^{2} + 15 n + 43 = 0

x^{2} = 4 x + 8

solvefor B,[(A^c\cup B)-A]\cap (A\cup B)=B-A

so l v e f or B, [(A^{c} \cup B) - A] \cap (A \cup B) = B - A

x^{2} + 1 = 10