Advertisements
Advertisements
प्रश्न
Using identities, evaluate 992
Advertisements
उत्तर
992 = (100 − 1)2
= (100)2 − 2(100) (1) + (1)2 [(a − b)2 = a2 − 2ab + b2 ]
= 10000 − 200 + 1 = 9801
shaalaa.com
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
संबंधित प्रश्न
Simplify (a2 − b2)2
Simplify (4m + 5n)2 + (5m + 4n)2
Using identities, evaluate 78 × 82
Expand (5a + 6b)2
Use an expansion formula to find the value.
(97)2
Expand:
(10 + y)2
Expand:
`("y" - 3/"y")^2`
Verify the following:
(a + b)(a + b)(a + b) = a3 + 3a2b + 3ab2 + b3
Factorise `x^2 + 1/x^2 + 2 - 3x - 3/x`.
Factorise p4 + q4 + p2q2.
