Advertisements
Advertisements
प्रश्न
Using suitable identities, evaluate the following.
(49)2
मूल्यांकन
Advertisements
उत्तर
We have,
(49)2 = (50 – 1)2
= (50)2 + 12 – 2 × 50 × 1 ...[Using the identity, (a – b)2 = a2 + b2 – 2ab]
= 2500 + 1 – 100
= 2401
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
Evaluate the following: 35 × 37
Evaluate the following: 103 × 96
By using identity evaluate the following:
`1 + 1/8 - 27/8`
Multiply the following:
(2x – 2y – 3), (x + y + 5)
Simplify:
(x2 – 4) + (x2 + 4) + 16
Simplify:
(4.5a + 1.5b)2 + (4.5b + 1.5a)2
Simplify:
(s2t + tq2)2 – (2stq)2
Expand the following, using suitable identities.
`((2a)/3 + b/3)((2a)/3 - b/3)`
Using suitable identities, evaluate the following.
(98)2
Using suitable identities, evaluate the following.
(1005)2
