Advertisements
Advertisements
प्रश्न
Using suitable identities, evaluate the following.
(729)2 – (271)2
Advertisements
उत्तर
We have,
(729)2 – (271)2 = (729 + 271)(729 – 271) ...[Using the identity, a2 – b2 = (a + b)(a – b)]
= 1000 × 458
= 458000
APPEARS IN
संबंधित प्रश्न
Expand 4p2 – 25q2
Factorise the following algebraic expression by using the identity a2 – b2 = (a + b)(a – b)
z2 – 16
Simplify using identities
(3p + q)(3p – q)
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
9x2 – 1
Factorise the following using the identity a2 – b2 = (a + b)(a – b).
`x^2/25 - 625`
Factorise the expression and divide them as directed:
(x3 + x2 – 132x) ÷ x(x – 11)
Verify the following:
`((3p)/7 + 7/(6p))^2 - (3/7p + 7/(6p))^2 = 2`
Find the value of a, if 8a = 352 – 272
Find the value of a, if pq2a = (4pq + 3q)2 – (4pq – 3q)2
Find the value of `(198 xx 198 - 102 xx 102)/96`
