Question

Factorise
49x square + 70xy + 25y square​

Answer 1

Step-by-step explanation:

49x^2+25y^2+70xy

(7x)^2+(5y)^2+2×7x×5y

(7x+5y)^2

Answer 2

Step-by-step explanation:

$49 {x}^{2} + 70xy + 25 {y }^{2}$

$= 49 {x}^{2} + 35xy + 35xy + 25 {y}^{2}$

$= 7x(7x + 5y) + 5y(7x + 5y)$

$= (7x + 5y)(7x + 5y)$

$= {(7x + 5y)}^{2}$