Advertisements
Advertisements
प्रश्न
Expand (3p + 4q)3
बेरीज
उत्तर
(3p + 4q)3
Comparing (3p + 4q)3 with (a + b)3 we have a = 3p and b = 4q
(a + b)3 = a3 + 3a2b + 3ab2 + b2
(3p + 4q)3 = (3p)3 + 3(3p)2(4q) + 3(3p)(4q)2 + (4q)3
= 33p3 + 3(9p2)(4q) + 9p(16q2) – 43q3
= 27p3 + 108p2q + 144pq3 + 64q3
shaalaa.com
या प्रश्नात किंवा उत्तरात काही त्रुटी आहे का?
पाठ 3: Algebra - Exercise 3.3 [पृष्ठ ९१]
APPEARS IN
संबंधित प्रश्न
Expand.
`((5x)/y + y/(5x))^3`
Simplify.
(3r − 2k)3 + (3r + 2k)3
Find the cube of : 5a + 3b
If a ≠ 0 and `a - 1/a` = 4 ; find : `( a^2 + 1/a^2 )`
Find the cube of: 4x + 7y
Find the cube of: `4"p" - (1)/"p"`
If x + 2y = 5, then show that x3 + 8y3 + 30xy = 125.
Evaluate the following :
(3.29)3 + (6.71)3
If `x^2 + 1/x^2` = 23, then find the value of `x + 1/x` and `x^3 + 1/x^3`
Find the volume of the cube whose side is (x + 1) cm
