Question

factorise 125a^3-343b^3​

Answer 1

Answer:

Step-by-step explanation:

$x^{3} -y^{3} =(x-y)(x^{2} +xy+y^{2} )$

$125a^{3} -343b^{3} \\= (5a)^{3} -(7b)^{3} \\= (5a-7b)((5a)^{2}+5a*7b+(7b)^{2} )\\=(5a-7b)(25a^{2}+35ab+49b^{2} )$