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 : ( x + 8 )( x - 10 )
Expand : ( x - 2y + 2 )2
If a + b + c = p and ab + bc + ca = q ; find a2 + b2 + c2.
If x + 2y + 3z = 0 and x3 + 4y3 + 9z3 = 18xyz ; evaluate :
`[( x + 2y )^2]/(xy) + [(2y + 3z)^2]/(yz) + [(3z + x)^2]/(zx)`
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 x2 + `x^(1/2)`= 7 and x ≠ 0; find the value of:
7x3 + 8x − `7/x^3 - 8/x`
Find the value of 'a': 9x2 + (7a - 5)x + 25 = (3x + 5)2
If 3a + 5b + 4c = 0, show that : 27a3 + 125b3 + 64c3 = 180 abc
If x = `1/[ 5 - x ] "and x ≠ 5 find "x^3 + 1/x^3`
