Advertisements
Advertisements
प्रश्न
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
28ay2 – 175ax2
उत्तर
We have,
28ay2 – 175ax2 = 7a(4y2 – 25x2)
= 7a[(2y)2 – (5x)2]
= 7a(2y – 5x)(2y + 5x)
APPEARS IN
संबंधित प्रश्न
Using the identity (a + b)(a – b) = a2 – b2, find the following product
(p + 2)(p – 2)
Find the value of (x – y)(x + y)(x2 + y2)
Using suitable identities, evaluate the following.
(69.3)2 – (30.7)2
Using suitable identities, evaluate the following.
(132)2 – (68)2
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
x2 – 9
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
`(x^3y)/9 - (xy^3)/16`
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
y4 – 81
The sum of (x + 5) observations is x4 – 625. Find the mean of the observations.
Verify the following:
(p – q)(p2 + pq + q2) = p3 – q3
Verify the following:
(a2 – b2)(a2 + b2) + (b2 – c2)(b2 + c2) + (c2 – a2) + (c2 + a2) = 0
