Advertisements
Advertisements
प्रश्न
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
16x4 – 81
Advertisements
उत्तर
We have,
16x4 – 81 = (4x2)2 – 92
= (4x2 + 9)(4x2 – 9)
= (4x2 + 9)[(2x)2 – 32]
= (4x2 + 9)(2x + 3)(2x – 3)
APPEARS IN
संबंधित प्रश्न
Choose the right answers from the option:
The difference of the squares, (612 – 512 ) is equal to ______.
(a + b)(a – b) = a2 – b2
Using suitable identities, evaluate the following.
(132)2 – (68)2
Using suitable identities, evaluate the following.
(729)2 – (271)2
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).
`1/36a^2b^2 - 16/49b^2c^2`
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
x4 – y4 + x2 – y2
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
`x^2 - y^2/100`
Verify the following:
(p – q)(p2 + pq + q2) = p3 – q3
Find the value of `(6.25 xx 6.25 - 1.75 xx 1.75)/(4.5)`
