Question

Factorise the following expressions by extraction and grouping of a common factor:

(i) ab + 7ay

(ii) 6x⁴ - 4x³ + 2x²

(iii) 5c + cd - 2e + ef​

Answer 1

Answer:

$1)ab + 7ay \\ = a(b + 7y)$

$2)6 {x}^{4} - 4 {x}^{3} + 2 {x}^{2} \\ =2 {x}^{2} (3{x}^{2} - 2x + 1)$

$3)5c + cd - 2e + ef \\ = c(5 + d) - e(2 - f)$