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受欢迎的代数 >

4b^2-9=71

解答

4 b^{2} - 9 = 71

解答

b = 25, b = - 25

+1

十进制

b = 4.47213 \dots, b = - 4.47213 \dots

求解步骤

4 b^{2} - 9 = 71

将

9

到右边

4 b^{2} = 80

两边除以

4

b^{2} = 20

对于

x^{2} = f (a)

解为

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

b = 20, b = - 20

20 = 25

- 20 = - 25

b = 25, b = - 25

作图

流行的例子

x^{(2)}+11x+24=0

x^{(2)} + 11 x + 24 = 0

5 x^{2} + 4 = 3

5 x^{2} - 1 = 3 x^{2}

solvefor x,4x^2+xy=16

so l v e f or x, 4 x^{2} + x y = 16

quadraticformula x^2+7x+4=0

q u a d r a t i c f or m u l a x^{2} + 7 x + 4 = 0