Math, asked by krishnashekhar30, 6 months ago

use suitable special products to find each of the following: ( 2 xy + 3z ) ( 2 xy + 9z )

Answers

Answered by pankaj8765

0

Answer:

Using Identity (x+a) (x+b) = x^2+(a+b)x+ab

(2xy+3z)(2xy+9z)=(2xy)^2 + (3z+9z)×2xy + 3z×9z

= 4x^2y^2 + 12z×2xy + 27z^2

= 4x^2y^2 + 24xyz + 27z^2

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