If f (x) = x − 1X, then the root of the equation f (4x) = x is () A. 12B. -12C. 2D. -2

∵ f (4x) = x, ∵ 4x − 14x = x (x ≠ 0) is reduced to 4x2-4x + 1 = (2x-1) 2 = 0, and the solution is x = 12, so a

How to solve 4x-2.4x = 25.6 with equation

4x-2.4x=25.6
1.6x=25.6
x=25.6/1.6
x=16

How to solve the equation of 3.4x + 16.5 = 25

3.4x=25-16.5
3.4x=8.5
x=85/34

4x-13 = 25 △ 5 equation

4x-13=5
4x =5+13
4x =18
x =4.5

Multiplication of 5x square + 16x + 3 cross

5x square + 16x + 3 = (5x + 1) (x + 3)

The square of x plus 5x plus 6 = 0 cross multiplication can use this method to give the process and results who knows!

Energy can be reduced to (x + 2) (x + 3) = 0. The method is to decompose the constant term positive 6 into the product of two numbers, and the sum of the two numbers should be equal to the coefficient positive 5 of the primary term. Obviously, the two numbers are positive 2 and positive 3, so they can be reduced to (x + 2) (x + 3) = 0, and the two numbers are negative 2 and negative 3 respectively
Adopt

Square of cross multiplied by X + 1 / 2x-3

x²+1/2x-3
=1/2(2x²+x-6)
=1/2(2x-3)(x+2)
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The square of X - x + 1 factorization factor, can use cross multiplication

This can't be broken down
It can only be formulated like this
Original formula = x & # 178; - x + 1 / 4 + 3 / 4
=(x-1/2)²+3/4

The square of x minus 4x minus 45 equals 0

X & # 178; - 4x-45 = 0 (X-9) (x + 5) = 0 solution to x = 9 or x = - 5 remember to adopt, next time remember to ask me. Come on

If f (x) = x − 1X, then the root of the equation f (4x) = x is () A. 12B. -12C. 2D. -2