Advertisements
Advertisements
Question
Using a2 − b2 = (a + b) (a − b), find (1.02)2 − (0.98)2
Advertisements
Solution
(1.02)2 − (0.98)2 = (1.02 + 0.98) (1.02 − 0.98)
= (2) (0.04) = 0.08
RELATED QUESTIONS
Use a suitable identity to get the following products.
(2y + 5) (2y + 5)
Use a suitable identity to get the following products.
`(3a - 1/2)(3a - 1/2)`
Use a suitable identity to get the following products.
(a2 + b2) (− a2 + b2)
Use a suitable identity to get the following products.
`(x/2 + (3y)/4)(x/2 + (3y)/4)`
Find the following squares by suing the identities
(xy + 3z)2
Find the following squares by suing the identities
(0.4p − 0.5q)2
Simplify (7m − 8n)2 + (7m + 8n)2
Using identities, evaluate 712
Factorise the following.
x2 + 15x + 26
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.
