y. Very .WW-WH ) xy = (xy X Y10. Factorise each of the following:(1) 2

1.	y. Very .WW-WH ) xy = (xy X Y10. Factorise each of the following:(1) 27y +1252! (D) 64m2 - 343n
Answer» (I)27y³+125z³=(3y)³ +(5z)³ Formula:x³+y³=(x+y)(x²-xy+y²) Now,(3y)³+(5z)³=(3y+5z)(9y²-15yz+25z²) (ii)64m³-343n³=(4m)³-(7n)³ Formula:x³-y³=(x-y)(x²+xy+y²) (4m)³-(7n)³=(4m-7n)(16m²+28mn+49n²)

y. Very .WW-WH ) xy = (xy X Y10. Factorise each of the following:(1) 27y +1252! (D) 64m2 - 343n

Answer»

(I)27y³+125z³=(3y)³ +(5z)³

Formula:x³+y³=(x+y)(x²-xy+y²)

Now,(3y)³+(5z)³=(3y+5z)(9y²-15yz+25z²)

(ii)64m³-343n³=(4m)³-(7n)³

Formula:x³-y³=(x-y)(x²+xy+y²)

(4m)³-(7n)³=(4m-7n)(16m²+28mn+49n²)