Advertisements
Advertisements
प्रश्न
Using suitable identities, evaluate the following.
(98)2
मूल्यांकन
Advertisements
उत्तर
We have,
(98)2 = (100 – 2)2
= (100)2 + (2)2 – 2 × 100 × 2 ...[Using the identity, (a – b)2 = a2 + b2 – 2ab]
= 10000 + 4 – 400
= 9604
shaalaa.com
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
अध्याय 7: Algebraic Expression, Identities and Factorisation - Exercise [पृष्ठ २३३]
APPEARS IN
संबंधित प्रश्न
Show that (3x + 7)2 − 84x = (3x − 7)2
Simplify the following using the formula: (a − b)(a + b) = a2 − b2: 9.8 × 10.2
Simplify the following using the identities: \[\frac{8 . 63 \times 8 . 63 - 1 . 37 \times 1 . 37}{0 . 726}\]
Evaluate the following: 102 × 106
Evaluate the following: 103 × 96
Expand the following:
(2x + 3y + 4z)2
Using algebraic identity, find the coefficients of x2, x and constant term without actual expansion
(2x + 3)(2x – 5)(2x – 6)
On dividing 57p2qr by 114pq, we get ______.
Simplify:
(b2 – 49)(b + 7) + 343
Simplify:
(pq – qr)2 + 4pq2r
