Advertisements
Advertisements
प्रश्न
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
`x^2/9 - y^2/25`
Advertisements
उत्तर
We have,
`x^2/9 - y^2/25 = (x/3)^2 - (y/5)^2`
= `(x/3 - y/5)(x/3 + y/5)`
APPEARS IN
संबंधित प्रश्न
Using the identity (a + b)(a – b) = a2 – b2, find the following product
(1 + 3b)(3b – 1)
Using identity, find the value of (1.9) × (2.1)
(a + b)(a – b) = a2 – b2
The value of p for 512 – 492 = 100p is 2.
Using suitable identities, evaluate the following.
(339)2 – (161)2
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
9x2 – (3y + z)2
Factorise the expression and divide them as directed:
(2x3 – 12x2 + 16x) ÷ (x – 2)(x – 4)
Verify the following:
(ab + bc)(ab – bc) + (bc + ca)(bc – ca) + (ca + ab)(ca – ab) = 0
Find the value of a, if 9a = 762 – 672
Find the value of `(198 xx 198 - 102 xx 102)/96`
