It's a maths question worth 4 marks

17.   First expand the left side:-

(2x + 1)(ax + b)

= 2ax^2 + ax + 2bx + b

= 2a x^2 + x(a + 2b) + b  =  6x^2 - 5x + c.

Comparing coefficients:-

2a = 6  so  a = 3

a + 2b = -5

3 + 2b = -5

2b = -5 - 3 = -8

b = -4

Also b = c, so c = - 4

 a = 3, b = -4 and c = -4

x= -3

step-by-step explanation:

step 1: simplify brackets

4 - x - 1 = 6

step 2: simpilfy

3 - x = 6

step 3: subtract 3 from both sides

-x = 6 - 3

step 4: simpilfy 6 - 3

-x = 3

step 5: multiply both sides by -1

x = -3

d

step-by-step explanation: