f.2 maths

1. 4x + A ≡ Bx + 3
A=3, B=4
2. 4x - B ≡ 5 - Ax
A=-4, B=-5
3.
Ax + B ≡ (-3)(4x - 1)
Ax + B ≡ -12x +3
A=-12, B=3
4.
A x^2 + Bx + C ≡ (x - 4)(x - 1)
A x^2 + Bx + C ≡ x^2-5x+4
A=1, B=-5, C=4
5.
A x^2 + Bx + C ≡ (x-3)^2
A x^2 + Bx + C ≡ x^2-6x+9
A=1, B=-6, C=9
6.
(2x + 3)^2 - 5x ≡ A x^2 + Bx +C
4x^2 + 12x+9 - 5x ≡ A x^2 + Bx +C
4x^2 + 7x+9 ≡ A x^2 + Bx +C
A=4, B=7, C=9
7.
2x (x - 4) + (3x +1)3 ≡ A x^2 +Bx + C
2x ^2 - 8x + 9x +3 ≡ A x^2 +Bx + C
2x ^2 + x +3 ≡ A x^2 +Bx + C
A=2, B=1, C=3
8.
3x (x + B) ≡ A x^2 + 12x
3x^2+3Bx=A x^2 + 12x
A=3, 3B=12 so B=4

1:4=B,A=3

2:4=-A,-B=5/B=-5

3:Ax+B≡-12x+4
A=-12,B=4

4:A x2 + Bx + C ≡X x2-x-4x+4
A x2 + Bx + C ≡X x2-5x+4
A=1,B=-5,C=4

5:A x2 + Bx + C ≡ 2X-6
A=0,B=2,C=-6

6:4x+6-5x≡A x2 + Bx +C
6-x≡A x2 + Bx +C
A=0,B=-1,C=6

7:2 x2-8x+9x+3≡ A x2 +Bx + C
2 x2+x+3≡ A x2 +Bx + C
A=2,B=1,C=3

8:3 x2+3xB≡ A x2 + 12x
3=A,3B=12
3=A,B=4