Question

please answer these questions
it is maths subject ​

Answer 1

Answer:

i)

$7x - 42 = 7(x - 6)$

ii)

$20l {}^{2} m + 30alm = 10lm(2l + 3a)$

iii)

$7a {}^{2} + 14a = 7a(a + 2)$