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受欢迎的代数 >

h^2-12h+16=0

解答

h^{2} - 12 h + 16 = 0

解答

h = 2 (3 + 5), h = 2 (3 - 5)

+1

十进制

h = 10.47213 \dots, h = 1.52786 \dots

求解步骤

h^{2} - 12 h + 16 = 0

使用求根公式求解

h_{1, 2} = \frac{- ( - 12 ) \pm ( - 12 ) ^{2} - 4 \cdot 1 \cdot 16}{2 \cdot 1}

(- 12)^{2} - 4 \cdot 1 \cdot 16 = 45

h_{1, 2} = \frac{- ( - 12 ) \pm 4 5}{2 \cdot 1}

将解分隔开

h_{1} = \frac{- ( - 12 ) + 4 5}{2 \cdot 1}, h_{2} = \frac{- ( - 12 ) - 4 5}{2 \cdot 1}

h = \frac{- ( - 12 ) + 4 5}{2 \cdot 1} : 2 (3 + 5)

h = \frac{- ( - 12 ) - 4 5}{2 \cdot 1} : 2 (3 - 5)

二次方程组的解是:

h = 2 (3 + 5), h = 2 (3 - 5)

作图

流行的例子

y^{2} + 0^{2} = 100

solvefor x,f(x+h)=x^2+2x+1

so l v e f or x, f (x + h) = x^{2} + 2 x + 1

3 x^{2} - 2 x^{2} = 7

4x(x-3)=(x+3)(x-3)

4 x (x - 3) = (x + 3) (x - 3)

x^{2} = 10 x - 29