I have to leave to pick up the kids at school.
a.  must b.  should c.  ought to  d. need to

I. Choose the word that has the underlined part pronounced differently from the others. 1. a. patient b. address c. assistant d. distance 2. a. fishing b. cousin c. invent d. furniture 3. a. conduct b. customer c. upstairs d. introduce 4. a. upstairs b. fair c. straight d. downstairs 5. a. face b. city c. center d. commercial

x^2-x=-2x+2

(x^2-2x+1)-4=0