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受欢迎的代数 >

m^2+11m+16=0

解答

m^{2} + 11 m + 16 = 0

解答

m = \frac{- 11 + 57}{2}, m = \frac{- 11 - 57}{2}

+1

十进制

m = - 1.72508 \dots, m = - 9.27491 \dots

求解步骤

m^{2} + 11 m + 16 = 0

使用求根公式求解

m_{1, 2} = \frac{- 11 \pm 1 1 ^{2} - 4 \cdot 1 \cdot 16}{2 \cdot 1}

1 1^{2} - 4 \cdot 1 \cdot 16 = 57

m_{1, 2} = \frac{- 11 \pm 57}{2 \cdot 1}

将解分隔开

m_{1} = \frac{- 11 + 57}{2 \cdot 1}, m_{2} = \frac{- 11 - 57}{2 \cdot 1}

m = \frac{- 11 + 57}{2 \cdot 1} : \frac{- 11 + 57}{2}

m = \frac{- 11 - 57}{2 \cdot 1} : \frac{- 11 - 57}{2}

二次方程组的解是:

m = \frac{- 11 + 57}{2}, m = \frac{- 11 - 57}{2}

作图

流行的例子

x^{2} + 20 x + 86 = 0

(x^2)/8 =(24-x^2)/(16)

\frac{x ^{2}}{8} = \frac{24 - x ^{2}}{16}

31w^2-40w+16=6w^2

31 w^{2} - 40 w + 16 = 6 w^{2}

因式分解 5x^2+2=-7x+8

f a c t or 5 x^{2} + 2 = - 7 x + 8

1.5 z^{2} + 2 z = 0