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?
RELATED QUESTIONS
Use a suitable identity to get the following products.
(7a − 9b) (7a − 9b)
Find the following squares by suing the identities.
(b − 7)2
Use an expansion formula to find the value.
(97)2
Expand: (2a – 3b)2
Expand: (51)2
Simplify: (a + b)2 – 4ab
Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2.
a2x2 + 2ax + 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.
9x2 + 24x + 16
Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2.
2x3 + 24x2 + 72x
