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受欢迎的代数 >

solvefor a,(a+b)(a-b)=b(a-b)

解答

求解

a, (a + b) (a - b) = b (a - b)

解答

a = 0, a = b

求解步骤

(a + b) (a - b) = b (a - b)

将

b (a - b)

para o lado esquerdo

(a + b) (a - b) - b (a - b) = 0

因式分解

(a + b) (a - b) - b (a - b) : a (- b + a)

a (- b + a) = 0

使用零因数法则： If

ab = 0

then

a = 0

or

b = 0

a = 0 or - b + a = 0

解

- b + a = 0 : a = b

二次方程组的解是:

a = 0, a = b

作图

流行的例子

solvefor x,2kx^2+3x-8=0

so l v e f or x, 2 k x^{2} + 3 x - 8 = 0

3x^2-20x+50=x^2-10x+50

3 x^{2} - 20 x + 50 = x^{2} - 10 x + 50

(- x + 1)^{2} = 0

x^{2} = 3^{2} + 6^{2}

2x^2+2x-1=x^2+6x-5

2 x^{2} + 2 x - 1 = x^{2} + 6 x - 5