Factorize
4a^2 - 9b^2 - 16c^2 + 24bc

Given the choice between receiving $1.000.000 in one month or a single penny-doubled everyday for the period of one month; which option would you choice? show your work to support your answer. (assume that 1 month=30 days)

Write numerical coefficient of y² in the expression 2x² - 15xy – 7y²

Evaluate the discriminant of each equation. tell how many solutions each equation has and whether the solutions are real or imaginary. 4x^2 + 20x + 25 = 0