4d+6-5d+4
Solve 4x^2-3x-11=0
Betsy, a recent retiree, requires $6,000 per year in extra income. She has $70,000 to invest and can invest in B-rated bonds payi...
8+4r-13-6r
(x+3)(x-4)
A sum of money is shared among nine people so that the first gets 75, the next 150,the next 225, and so on
A sum of money is shared among nini people so that the first gets 75, the next 150,the next 225, and so on
7a+10+6a-3
Solve x^2-3x-7=0
y squared = 5, make 'y' the subject