Advertisements
Advertisements
प्रश्न
(a + b)2 – 2ab = ______ + ______.
रिक्त स्थान भरें
उत्तर
(a + b)2 – 2ab = a2 + b2.
Explanation:
We have,
(a + b)2 – 2ab = a2 + b2 + 2ab – 2ab ...[∵ (a + b)2 = a2 + b2 + 2ab]
= a2 + b2
shaalaa.com
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
APPEARS IN
संबंधित प्रश्न
Use a suitable identity to get the following products.
(− a + c) (− a + c)
Simplify (2x +5)2 − (2x − 5)2
Using identities, evaluate 297 × 303
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
Expand the following square, using suitable identities
(2x + 5)2
The sum of areas of two squares with sides 4a and 4b is ______.
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.
a2x3 + 2abx2 + b2x
If a2 + b2 = 74 and ab = 35, then find a + b.
