Question

निम्न को गुणा कीजिए -

`(3/4x - 4/3y),(2/3x + 3/2y)`

Answer 1

हमारे पास है,

`(3/4x - 4/3 y)` और `(2/3x + 3/2y)`

∴ `(3/4 x - 4/3y)(2/3x + 3/2y) = 3/4x (2/3x + 3/2y) - 4/3y (2/3x + 3/2y)`

= `3/2 xx 2/3 x^2 + 3/4 xx 3/2 xy - 4/3 xx 2/3 yx - 4/3 xx 3/2 y^2`

= `1/2 x^2 + 9/8 xy - 8/9 xy - 2y^2`

= `1/2 x^2 + (9/8 - 8/9)xy - 2y^2`

= `1/2 x^2 + ((81 - 64)/72)xy - 2y^2`

= `1/2 x^2 + 17/72 xy - 2y^2`