Algebraic Expressions

Question 6: Simplify −4( 5x−3 )+7x−1. Solution: −4( 5x−3 )+7x−1 =−20x+12+7x−1 =−13x+11 Question 7: ( 3x−2y )−( x+4y ) Solution: ( 3x−2y )−( x+4y ) =3x−2y−x−4y =2x−6y Question 8: Simplify −3( 2a−4b )− 1 3 ( 6a−15b ) Solution: −3( 2a−4b )− 1 3 ( 6a−15b ) =−6a+12b−2a+5b =−8a+17b Question 9: 1 3 ( −2x+6y−9z )− 1 … Read more

5.2.1 Algebraic Expressions, PT3 Focus Practice   Question 1: Calculate the product of each of the following pairs of algebraic terms. (a) 2rs × 4r2s3t (b) 1 2 5 a 2 b 2 × 5 14 a b 3 c 2 (c) 1 1 2 x y × 4 9 x 2 z   Solution: … Read more

5.1 Algebraic Expressions 5.1.1 Algebraic terms in Two or More Unknowns 1. An algebraic term in two or more unknowns is the product of the unknowns with a number. Example 1: 4a3b = 4 × a × a × a× b 2. The coefficient of an unknown in the given algebraic term is the factor of the … Read more