algebra 7_6_6_S

© 2007 1 -2010 tutorco.com 1. Add the following:-a) 6 -xy -yz + 2xy + 5yz – 8 b) 2a – 3b + 4c , a – b – 2c c) 2x – 3y + 4z , 5x + 2y – 5z 2. Subtract the following: a) -4x from -2x 7/6/6/S TOPIC: ALGEBRA © 2007 2 -2010 tutorco.com b) – 5b from 8b c) (8x + 7xy + 5y) -(-5x – 2xy + 3y) 3. From the sum of x² + x + 1 and x² -x + 1 subtract -x² -x + 1. 4. Multiply:-a) 12abc by -5 b) x²y² and xy³ © 2007 3 -2010 tutorco.com c) -2 and – 12 st d) pq and qr and rs e) -7 (3a + 4b + 2c) 5. Divide the following : a. 6jk by -3k b. 10x y³ z² by 5 x² y² z © 2007 4 -2010 tutorco.com c. 3x³ -5x² + 10x + 3 by x 6. Solve for the unknown:-a) 45 + X = 90 b) 7X = 14 c) X/5 = 10 d) P – 5 = 0 © 2007 5 -2010 tutorco.com e) T + 8 = -1 f) 8a + 20 = 4 g) (x-2) = (x + 3) h) – 30 + m = -16