Advertisements
Advertisements
प्रश्न
Expand : (3x + 5y + 2z) (3x - 5y + 2z)
बेरीज
Advertisements
उत्तर
(3x + 5y + 2z) (3x - 5y + 2z)
= {(3x + 2z) + (5y)} {(3x + 2z) - (5y)}
= (3x + 2z)2 - (5y)2
{since (a + b) (a - b) = a2 - b2}
= 9x2 + 4z2 + 2 × 3x × 2z - 25y2
= 9x2 + 4z2 + 12xz - 25y2
= 9x2 + 4z2 - 25y2 + 12xz
shaalaa.com
या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
APPEARS IN
संबंधित प्रश्न
Expand.
`(x + 1/x)^3`
Expand.
`(2m + 1/5)^3`
If a ≠ 0 and `a- 1/a` = 3 ; Find :
`a^3 - 1/a^3`
If a ≠ 0 and `a - 1/a` = 4; find: `(a^2 + 1/a^2)`
Find the cube of: 4x + 7y
If `("a" + 1/"a")^2 = 3`; then show that `"a"^3 + (1)/"a"^3 = 0`
If a + b + c = 0; then show that a3 + b3 + c3 = 3abc.
Expand: (x + 3)3.
Expand (3p + 4q)3
Expand (104)3
