f(x)(x^2)=f(x)(x)^2

解答

f (x) (x^{2}) = f (x) (x)^{2}

对所有 x 为真

求解步骤

f (x) (x^{2}) = f (x) x^{2}

x^{2} f (x) = f (x) x^{2}

将

f (x) x^{2}

para o lado esquerdo

0 = 0

两侧相等

对所有 x 为真

so l v e f or x, 5 x + 3 y = - 2

so l v e f or x, 9 x - 3 y = 9

so l v e f or c, 4 c + d + 10 = 8 c + 2 d

x + \frac{2}{25} = 50000

2 \cdot (2 x - 1)^{2} - (3 x + 4)^{2} = 1 - (x - 5)^{2}