Advertisements
Advertisements
प्रश्न
Use an expansion formula to find the value.
(1005)2
बेरीज
Advertisements
उत्तर
It is known that (a + b)2 = a2 + 2ab + b2 and (a − b)2 = a2 − 2ab + b2
(1005)2
= (1000 + 5)2
= (1000)2 + 2 × 1000 × 5 + (5)2
= 1000000 + 10000 + 25
= 1010025
shaalaa.com
या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
संबंधित प्रश्न
Find the following squares by suing the identities
(0.4p − 0.5q)2
Using identities, evaluate 992
Expand `("a"/2+"b"/3)^2`
Expand `("x"+1/2)^2`
Use the formula to find the value.
98 × 102
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 + 2x + 1
Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2.
a2x2 + 2abx + b2
Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2.
a2x2 + 2abxy + b2y2
If a2 + b2 = 74 and ab = 35, then find a + b.
