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
shaalaa.com
Is there an error in this question or solution?
APPEARS IN
RELATED QUESTIONS
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
(0.4p − 0.5q)2
Using a2 − b2 = (a + b) (a − b), find 1532 − 1472
Using (x + a) (x + b) = x2 + (a + b) x + ab, find 9.7 × 9.8
Use a formula to multiply of (2t – 5)(2t + 5)
Evaluate the following, using suitable identity
512
Evaluate the following, using suitable identity
1032
Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2.
x2 + 2x + 1
Factorise the following.
x2 + 9x + 20
Factorise p4 + q4 + p2q2.
