Factorise the following - 

1)  245x^5-80y^2x

Asked by Cl_narayan | 24th Dec, 2019, 08:04: AM

Expert Answer:

245x5-80y2x
= 5x(49x4 - 16y2)
= 5x[(7x2)2 - (4y)2]
= 5x (7x2 - 4y)(7x2 + 4y)    ...since a2 - b=(a - b)(a + b)   

Answered by Yasmeen Khan | 24th Dec, 2019, 10:48: AM