Advertisements
Advertisements
प्रश्न
Expand the following, using suitable identities.
`((2a)/3 + b/3)((2a)/3 - b/3)`
बेरीज
उत्तर
We have,
`((2a)/3 + b/3)((2a)/3 - b/3) = ((2a)/3)^2 - (b/3)^2` ...[Using the identity, (a + b)(a – b) = a2 – b2]
= `4/9a^2 - 1/9b^2`
shaalaa.com
या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 7: Algebraic Expression, Identities and Factorisation - Exercise [पृष्ठ २३२]
APPEARS IN
संबंधित प्रश्न
Show that (3x + 7)2 − 84x = (3x − 7)2
Show that `(4pq + 3q)^2 - (4pq - 3q)^2 = 48pq^2`
Find the following product: (x − 11) (x + 4)
Evaluate the following: 109 × 107
Evaluate the following: 53 × 55
Expand the following:
(3a + 1)(3a – 2)(3a + 4)
If 2x – 3y – 4z = 0, then find 8x3 – 27y3 – 64z3
Simplify:
(a – b) (a2 + b2 + ab) – (a + b) (a2 + b2 – ab)
Expand the following, using suitable identities.
`(4/5p + 5/3q)^2`
Expand the following, using suitable identities.
`((2x)/3 - 2/3)((2x)/3 + (2a)/3)`
