Advertisements
Advertisements
प्रश्न
Find the following squares by suing the identities.
(2xy + 5y)2
Advertisements
उत्तर
(2xy + 5y)2 = (2xy)2 + 2(2xy) (5y) + (5y)2
[(a + b)2 = a2 + 2ab + b2]
= 4x2y2 + 20xy2 + 25y2
APPEARS IN
संबंधित प्रश्न
Use a suitable identity to get the following products.
(1.1m − 0.4) (1.1 m + 0.4)
Use a suitable identity to get the following products.
(6x − 7) (6x + 7)
Using identities, evaluate 297 × 303
Use an expansion formula to find the value.
(1005)2
Use the formula to find the value.
502 × 498
Use the formula to find the value.
98 × 102
Expand the following square, using suitable identities
(mn + 3p)2
Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2.
x2 + 6x + 9
Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2.
16x2 + 40x + 25
Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2.
9x2 + 30x + 25
