Advertisements
Advertisements
Question
Using a2 − b2 = (a + b) (a − b), find 1532 − 1472
Solution
1532 − 1472 = (153 + 147) (153 − 147)
= (300) (6) = 1800
shaalaa.com
Is there an error in this question or solution?
APPEARS IN
RELATED QUESTIONS
Use a suitable identity to get the following products.
(1.1m − 0.4) (1.1 m + 0.4)
Find the following squares by suing the identities
(xy + 3z)2
Use an expansion formula to find the value.
(102)2
Use the formula to find the value.
98 × 102
Expand: (2a – 3b)2
Factors of 9x2 + 6xy are
Show that (x + 2y)2 – (x – 2y)2 = 8xy
(a + b)2 – 2ab = ______ + ______.
Factorise the following, using the identity a2 + 2ab + b2 = (a + b)2.
2x3 + 24x2 + 72x
The height of a triangle is x4 + y4 and its base is 14xy. Find the area of the triangle.
