Advertisements
Advertisements
प्रश्न
Use a suitable identity to get the following products.
(2y + 5) (2y + 5)
Advertisements
उत्तर
The product will be as follow
(2y + 5) (2y + 5) = (2y + 5)2
= (2y)2 + 2(2y) (5) + (5)2 [(a + b)2 = a2 + 2ab + b2]
= 4y2 + 20y + 25
shaalaa.com
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
संबंधित प्रश्न
Use a suitable identity to get the following products
(2a − 7) (2a − 7)
Simplify (2x +5)2 − (2x − 5)2
Using a2 − b2 = (a + b) (a − b), find 12.12 − 7.92
Using (x + a) (x + b) = x2 + (a + b) x + ab, find 9.7 × 9.8
Simplify: (a + b)2 – 4ab
Factorise the following using suitable identity
a2 + 6ab + 9b2 – c2
Using identity, find the value of (100.1)2
Factorise the following.
y2 + 7y + 12
If p + q = 12 and pq = 22, then find p2 + q2.
What should be added to 4c(– a + b + c) to obtain 3a(a + b + c) – 2b(a – b + c)?
