Question

please help me guys.....​

Answer 1

Answer:

104

Step-by-step explanation:

By cross multiplication, we obtain :

(2x+7)(2x-7) = (4x+3)(x+2)

4x²-49 = 4x²+ 8x + 3x + 6            {LHS → a²-b²=(a+b)(a-b)}

-49 = 11x +6

-49 - 6=11x

-55=11x

∴x³+x²+x+1=  -125+25-5+1

-105+1= -104