Teacher's Guide - Pearson

Question 44.1 8x 3 1 64y 3 (3)4.2 218x 3 1 60x 2 − 50x (3)[6]Question 55.1 a) ___ 3y 22 ​✓ ✓ (2)3x 1 5b) ______ ​✓2 ✓ (2)5.2 a) (x 1 2)(a 2 b)✓✓✓ (3)b) (x 2 2y)(x 1 2y)✓✓ (2)c) (2x 1 3)(x 2 4)✓✓ (2)d) (2x 1 y)(2x 2 y 1 6)✓✓✓ (3)5.3 a) x 5 1 or x 5 22✓✓✓ (3)b) x 5 0 or x 5 5✓✓✓ (3)c) 2x 2 2 3x 2 9 5 0✓∴ (2x 1 3)(x 2 3) 5 0✓x 52 ​3__ ​ or x 5 3✓✓ (4)2[24]Question 6___6.1 g 5 6​ √___ 12tm ✓✓✓ (3)m6.2 x 5 ​ _______ ​✓✓ (2)3(a 1 b)[5]Total: 80Chapter 16: Formulae101