algebra 8.6.1

© 2007 1 -2010 tutorco.com 1. Add the following:-a) 2x + 5x + 6y – 9y b) 9 – 6x² + 3y² + 8x² -5 c) 2p² + 5q – 3pq – 12q d) 6 -xy -yz + 2xy + 5yz – 8 e) 12x + 15x + 16y – 19y f) 3x + 2y – 5z , 2x – 5y + 2z TOPIC: ALGEBRA 8/6/1/S© 2007 2 -2010 tutorco.com g) 2a – 3b + 4c , a – b – 2c h) 2x – 3y + 4z , 5x + 2y – 5z i) 8x + 7xy + 5y , -6x – xy – 8y , -5x – 2xy + 3y j) 5 + 2x – 3x² + 4x³ , 8 – x + 2x² + x³ k) 3a²b + 2ab – 3b² , 2b² -ab + 2a²b , ab – 2b² -3a²b © 2007 3 -2010 tutorco.com 2. Subtract the following: a) 6a from -4a b) -4x from -2x c) -7xy from 10xy d) 8x³ from 5x³ e) 12p² from 2p² f) 3xy from 8xy © 2007 4 -2010 tutorco.com g) – 9ab from – 2ab h) – 5b from 8b i) 4a – 7ab + 3b + 12 from 12a – 9ab + 5b -3b j) 3xy + 5yz – 7zx from 5xy – 2yz – 2zx + 10xyz © 2007 5 -2010 tutorco.com 3. Subtract the following : a) (3x + 2y – 5z) -(2x – 5y + 2z) b) (2a – 3b + 4c) -(a – b – 2c) c) (2x – 3y + 4z) -(5x + 2y – 5z) d) (8x + 7xy + 5y) -(-5x – 2xy + 3y) © 2007 6 -2010 tutorco.com 4. Subtract 3a + 4b + 2c from 8a + 13b + 7c 5. Subtract x – 3y – 4z from 2x – 5y + 2z 6. Subtract 2a – 3b + 4c from 4a – 6b –c 7. From the sum of x² + x + 1 and x² -x + 1 subtract -x² -x + 1. © 2007 7 -2010 tutorco.com 8. Subtract 2x³ + 7x² + 3x – 9 from 0. 9. What should be added to 3x³ -2x² + 5x + 1 so that the sum may be x³ -2x² + 4x – 1? 10. From the sum of 3x + 2y – 9 and 2x – 6y + 2 subtract the sum of 4x – 9y – 1 and -3x + 8y + 7.