Advertisements
Advertisements
प्रश्न
Expand : `( 3a + 2/b )( 2a - 3/b )`
Advertisements
उत्तर
`( 3a + 2/b )( 2a - 3/b) = (3a)(2a) + ( 2/b )(2a) - (3/b)(3a) - (2/b)(3/b)`
= `6a^2 + ( 4/b - 9/b )a - 6/b^2`
= `6a^2 + (-5/b)a - 6/b^2`
= `6a^2 - [5a]/b - 6/b^2`
APPEARS IN
संबंधित प्रश्न
Expand: `( 2x - 1/x )( 3x + 2/x )`
If a + b + c = 12 and a2 + b2 + c2 = 50; find ab + bc + ca.
In the expansion of (2x2 - 8) (x - 4)2; find the value of coefficient of x2
If 2( x2 + 1 ) = 5x, find :
(i) `x - 1/x`
(ii) `x^3 - 1/x^3`
If 2( x2 + 1 ) = 5x, find :
(i) `x - 1/x`
(ii) `x^3 - 1/x^3`
If a2 + b2 = 34 and ab = 12; find : 7(a - b)2 - 2(a + b)2
The difference between two positive numbers is 4 and the difference between their cubes is 316.
Find : Their product
Find the value of 'a': 9x2 + (7a - 5)x + 25 = (3x + 5)2
The sum of two numbers is 7 and the sum of their cubes is 133, find the sum of their square.
If x = `1/( x - 5 ) "and x ≠ 5. Find" : x^2 - 1/x^2`
