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受欢迎的代数 >

12=a^2

解答

12 = a^{2}

解答

a = 23, a = - 23

+1

十进制

a = 3.46410 \dots, a = - 3.46410 \dots

求解步骤

12 = a^{2}

交换两边

a^{2} = 12

对于

x^{2} = f (a)

解为

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

a = 12, a = - 12

12 = 23

- 12 = - 23

a = 23, a = - 23

作图

流行的例子

4(2x-4)-5x+4=-30

4 (2 x - 4) - 5 x + 4 = - 30

s^{2} - s - 12 = 0

0<= 4-1/3 x<= 2

0 \leq 4 - \frac{1}{3} x \leq 2

因式分解 27x^2-36x+12

f a c t or 27 x^{2} - 36 x + 12

化简 (0.9+2)/((0.9-1)^2)

s im pl i f y \frac{0.9 + 2}{( 0.9 - 1 ) ^{2}}