Paper 2 · Algebra and Equations
Remove brackets and simplify the expression 3(5 - x) - 2x(x + 3).
Model answer
15 - 9x - 2x^2
Also accepted: 15-9x-2x^2, -2x^2 - 9x + 15, -2x^2-9x+15, 15 - 9x - 2x², -2x² - 9x + 15
ZIMSEC Mathematics 4028/2, June 2010, Q1(a), via the Topical Collection