2x² - 5x+1 has roots alpha and beta. Find alpha²+beta². Please answer fast. I will mark the best answer as brainliest.

[15 points]find the least common multiple of the expressions: 1. 3x^2, 6x - 18 2. 5x, 5x(x +2) 3. x^2 - 9, x + 3 4. x^2 - 3x - 10, x + 2 explain if possible

15m is what percent of 60m; 3m; 30m; 1.5 km? the last one is km not m

Which ratios are equivalent to 10: 16? check all that apply. 30 to 48 25: 35 8: 32 5 to 15