Advertisements
Advertisements
प्रश्न
Expand : (3x + 5y + 2z) (3x - 5y + 2z)
योग
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
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
APPEARS IN
संबंधित प्रश्न
Expand.
(7 + m)3
Expand.
`(x + 1/x)^3`
Find the cube of: `( 3a - 1/a ) (a ≠ 0 )`
If a2 + `1/a^2 = 47` and a ≠ 0 find :
- `a + 1/a`
- `a^3 + 1/a^3`
Use property to evaluate : 93 - 53 - 43
If a ≠ 0 and `a- 1/a` = 3 ; Find :
`a^3 - 1/a^3`
If `"a"^2 + (1)/"a"^2 = 14`; find the value of `"a"^3 + (1)/"a"^3`
If `"p" + (1)/"p" = 6`; find : `"p"^3 + (1)/"p"^3`
Evaluate the following :
(8.12)3 - (3.12)3
Expand: (x + 3)3.
