1.) We multiply the quantities to combine them as one.
(x-5) (x-3) = 2x-9
x² - 3x - 5x + 15
x² - 8x + 15 = 2x - 9
2.) We simplify by transferring terms, 2x and -9 to the other side, to make their side 0. In this process, their sign changes after transferring to the other side.
x² - 8x + 15 + 9 - 2x = 0
x² - 10x + 24 = 0
Answer:
x² - 10x + 24 = 0
