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受欢迎的代数 >

4^2+x^2=12^2

解答

4^{2} + x^{2} = 1 2^{2}

解答

x = 82, x = - 82

+1

十进制

x = 11.31370 \dots, x = - 11.31370 \dots

求解步骤

4^{2} + x^{2} = 1 2^{2}

将

4^{2}

到右边

x^{2} = 128

对于

x^{2} = f (a)

解为

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

x = 128, x = - 128

128 = 82

- 128 = - 82

x = 82, x = - 82

作图

流行的例子

根 18x^2+476x+2400

roo t s 18 x^{2} + 476 x + 2400

3 k^{2} + 6 k = 105

roo t s x^{2} + 4 x - 5

3 (3 x + 6)^{2} - 46 = 5

solvefor x,3x^2+6x+1=0

so l v e f or x, 3 x^{2} + 6 x + 1 = 0