The roots of y^2 + 5y - 11 = 0 are a and b. Find (a + 3)(b + 3).
By Vieta's formulas, a + b = 5 and ab = -11, so (a + 3)(b + 3) = ab + 3(a + b) + 9 = -11 + 3*5 + 9 = 13.
Almost right guest, but a+ b = -5 not +5
Using that your final formula becomes -11 - 3*5 + 9 = -17
It said it wasn't correct. Thank you for trying though!
Great! Thanks!
