Suppose:
ax + by = 5 ax2 + by2 = 10 ax3 + by3 = 50 ax4 + by4 = 130
Calculate the value of:
13(x + y – xy) – 120(a + b) = ?
If log 2 + log (3x + 1) = log (2x - 9) + 2, then what is the value of x? Note : Assume all log represented above is to the base of 10.
