A box of laundry soap has `25\%` more soap in its new box. The new box holds `2` kg. How much soap did the old box hold?

The old box held 1.6 kg!

Step-by-step explanation:

1.6 kilograms

Step-by-step explanation:

1.25x = 2

x = 2/1.25

x = 1.6

the quotient is 4x^2 - 27x + 167 with a remainder of -996

step-by-step explanation:

in synthetic division, use -6 as the divisor and use the coefficients {4, -3, 5, 6}:

-6     )   4     -3     5     6

                -24   162 -1002

          4   -27   167   -996

thus, the quotient is 4x^2 - 27x + 167 with a remainder of -996.

note:   your "4x°-3x+5x+6" is ambiguous / incomplete.   i had to assume that you meant '4x^3 - 3x^2 + 5x + 6."