5x^2 + 20x
5x/x-2
Doesn't factor evenly, use quadratic -.5xx+2x+10 -.5(xx-4x-20) No factors of -20 add up to -4
A Letter.14-2x=3x+113-2x=3x3=5xX=0.6
It is: 5x(x-3)
72
44, 4x11
Turn of the century plus a decade or so.
The sum of adding 4 to itself 23 times is 96. This can be calculated by multiplying 4 by 24, as each addition of 4 counts as one less than the total number of 4s being added. Therefore, 4 x 24 equals 96.
900042
6 + 4 + 3 + 4 + 4 + 5 + 4 + 6 + 5 + 4 + 8 + 4 = 57
9 + 4 + 4 + 4 + 4 + 4 + 5 = 34
16.