Advertisements
Advertisements
प्रश्न
Expand.
(7 + m)3
योग
Advertisements
उत्तर
(7 + m)3
= (7)3 + 3 × (7)2 × (m) + 3 × (7) × (m)2 + (m)3 …[∵ (a + b)3 = a3 + 3a2b + 3ab2 + b3]
= 343 + 3(49)(m) + 3(7)(m2) + m3
= 343 + 147m + 21m2 + m3
shaalaa.com
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
संबंधित प्रश्न
Simplify.
(3r − 2k)3 + (3r + 2k)3
Find the cube of : 5a + 3b
If a2 + `1/a^2 = 47` and a ≠ 0 find :
- `a + 1/a`
- `a^3 + 1/a^3`
If `( a + 1/a )^2 = 3 "and a ≠ 0; then show:" a^3 + 1/a^3 = 0`.
If X ≠ 0 and X + `1/"X"` = 2 ; then show that :
`x^2 + 1/x^2 = x^3 + 1/x^3 = x^4 + 1/x^4`
If `x^2 + (1)/x^2 = 18`; find : `x^3 - (1)/x^3`
If x3 + y3 = 9 and x + y = 3, find xy.
If a + b = 5 and ab = 2, find a3 + b3.
Evaluate the following :
(3.29)3 + (6.71)3
Expand: (x + 3)3.
