3 x - 4

3 x - 4

3 x - 4
1 / 4 x = 40
X = 40 △ 1 / 4
x=160

How to calculate (3x / 4 + 60) × 2 / 3 = X-60

(3x / 4 + 60) × 2 / 3 = X-60
3x2 x/4x3 x + 40 = x-60
x/2 +40 =x-60
x/2=100
x=200

10. X ^ 2-1 = 3x, find 3x ^ 3-11x ^ 2 + 3x + 2 '
10. X ^ 2-1 = 3x, find 3x ^ 3-11x ^ 2 + 3x + 2
11. Given that the remainder of the polynomial f (x) divided by X + 2 is 1; the remainder of the polynomial f (x) divided by X + 3 is - 1, find the remainder of the polynomial f (x) divided by (x + 2) (x + 3)

First:
3x^3-11x^2+3x+2
=3x(x^2-3x)-2x^2=3x+2
=3x(x^2-3x)-2(x^2-3x)-3x+2
=(3x-2)(x^2-3x)-3x+2
Because x ^ 2-1 = 3x
So x ^ 2-3x = 1
So the original formula = 3x-2-3x + 2 = 0