Advertisements
Advertisements
प्रश्न
Expand the following, using suitable identities.
`((4x)/5 + y/4)((4x)/5 + (3y)/4)`
उत्तर
We have,
`((4x)/5 + y/4)((4x)/5 + (3y)/4) = ((4x)/5)^2 + (y/4 + (3y)/4) (4x)/5 + y/4 xx (3y)/4` ...[Using the identity, (x + a)(x + b) = x2 + (a + b)x + ab]
= `16/25x^2 + (4xy)/5 + (3y^2)/16`
APPEARS IN
संबंधित प्रश्न
Show that `(4/3 m - 3/4 n)^2 + 2mn = 16/9 m^2 + 9/16 n^2`
Show that `(4pq + 3q)^2 - (4pq - 3q)^2 = 48pq^2`
Simplify the following using the formula: (a − b)(a + b) = a2 − b2: 95 × 105
Simplify the following using the formula: (a − b)(a + b) = a2 − b2: 1.8 × 2.2
Evaluate the following: 109 × 107
Evaluate the following: 103 × 96
Evaluate the following: 994 × 1006
Simplify: (x – 2y + 3z) (x2 + 4y2 + 9z2 + 2xy + 6yz – 3xz)
Expand the following, using suitable identities.
(xy + yz)2
Expand the following, using suitable identities.
`(4/5a + 5/4b)^2`
