Chapter 1.1, Problem 2E

dr –DA V7 - 5r)

If possible, write 25 – 21x – 14x² as a linear combination of 2 − x − x², 2 – 2x − x² and 3x − 3 + 2x². Otherwise, enter DNE in all answer blanks. 25 21x14x² = (3x −3+2x²). (2 − x − x²)+ - (2 − 2x − x²)+ -

8. Add or subtract. Write the answer in standard form. -10 + (6 – 5i) – 9i = %3D | 9. Multiply. Write the answer in standard form. 3i(-5+i) = %3D