Advertisements
Advertisements
Question
Choose the right answers from the option:
The difference of the squares, (612 – 512 ) is equal to ______.
Options
1120
1230
1240
1250
Solution
(612 – 512)
= (61 - 51)(61 51) ....(∵ (a2 - b2) = (a + b)(a - b))
= 10 × 112
= 1120
APPEARS IN
RELATED QUESTIONS
Expand: (3x + 4y)(3x - 4y)
The product of (x + 5) and (x – 5) is ____________
Using the identity (a + b)(a – b) = a2 – b2, find the following product
(1 + 3b)(3b – 1)
The value of (a + 1)(a – 1)(a2 + 1) is a4 – 1.
Using suitable identities, evaluate the following.
(729)2 – (271)2
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
28ay2 – 175ax2
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
`y^3 - y/9`
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
p5 – 16p
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
y4 – 81
Find the value of a, if 8a = 352 – 272
