Advertisements
Advertisements
प्रश्न
Using identities, evaluate 992
उत्तर
992 = (100 − 1)2
= (100)2 − 2(100) (1) + (1)2 [(a − b)2 = a2 − 2ab + b2 ]
= 10000 − 200 + 1 = 9801
shaalaa.com
या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
APPEARS IN
संबंधित प्रश्न
Simplify (ab + bc)2 − 2ab2c
Using identities, evaluate 1022
Using (x + a) (x + b) = x2 + (a + b) x + ab, find 5.1 × 5.2
Use an expansion formula to find the value.
(97)2
Use the formula to find the value.
54 × 46
Expand: `("y" - 3/"y")^2`
The height of a triangle is x4 + y4 and its base is 14xy. Find the area of the triangle.
The cost of a chocolate is Rs (x + y) and Rohit bought (x + y) chocolates. Find the total amount paid by him in terms of x. If x = 10, find the amount paid by him.
If p + q = 12 and pq = 22, then find p2 + q2.
What should be added to 4c(– a + b + c) to obtain 3a(a + b + c) – 2b(a – b + c)?
