Question

factorise
49a³b -36ab​

Answer 1

Answer:

 ab(7a-6)(7a+6)

Step-by-step explanation:

$49a^{3}b -36ab$

Take ab common

$ab(49a^{2} -36)$

$ab(7^{2}a^{2}-6^{2})$

$ab((7a)^{2}-6^{2})$

$ab(7a-6)(7a+6)$