Advertisements
Advertisements
प्रश्न
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
4x2 – 25y2
Advertisements
उत्तर
We have,
4x2 – 25y2 = (2x)2 – (5y)2
= (2x – 5y)(2x + 5y)
APPEARS IN
संबंधित प्रश्न
Evaluate the following, using suitable identity
990 × 1010
Multiply the following:
(a2 – b2), (a2 + b2)
Using suitable identities, evaluate the following.
(132)2 – (68)2
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
(x + y)4 – (x – y)4
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
`x^2 - y^2/100`
Factorise the expression and divide them as directed:
(2x3 – 12x2 + 16x) ÷ (x – 2)(x – 4)
The sum of (x + 5) observations is x4 – 625. Find the mean of the observations.
Verify the following:
(ab + bc)(ab – bc) + (bc + ca)(bc – ca) + (ca + ab)(ca – ab) = 0
Find the value of a, if pqa = (3p + q)2 – (3p – q)2
Find the value of a, if pq2a = (4pq + 3q)2 – (4pq – 3q)2
