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
If 2x + 3y = 14 and 2x − 3y = 2, find the value of xy.
[Hint: Use (2x + 3y)2 − (2x − 3y)2 = 24xy]
Find the following product: (x + 4) (x + 7)
Find the following product: (y2 + 12) (y2 + 6)
Multiply the following:
(2x – 2y – 3), (x + y + 5)
Simplify:
(1.5p + 1.2q)2 – (1.5p – 1.2q)2
Simplify:
(x2 – 4) + (x2 + 4) + 16
Simplify:
(ab – c)2 + 2abc
Simplify:
(b2 – 49)(b + 7) + 343
Carry out the following division:
76x3yz3 ÷ 19x2y2
Carry out the following division:
17ab2c3 ÷ (–abc2)
