class 9 CBSE Maths expand each of the following using suitable identity ( X+2Y+ 4z) whole square
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x2+4ysqauare+16zsquare+4xy+16yz++8xz
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Hey!
Given expression :- ( x + 2y + 4z )²
Using identity :-
( a + b + c )² = a² + b² + c² + 2ab + 2bc + 2ca
( x + 2y + 4z ) = x² + ( 2y )² + ( 4z )² + 2x × 2y + 2 × 2y × 4z + 2 × 4z × x
= x² + 4y² + 16z² + 4xy + 16yz + 8xz
⬆ is the expansion of the given Expression .
Given expression :- ( x + 2y + 4z )²
Using identity :-
( a + b + c )² = a² + b² + c² + 2ab + 2bc + 2ca
( x + 2y + 4z ) = x² + ( 2y )² + ( 4z )² + 2x × 2y + 2 × 2y × 4z + 2 × 4z × x
= x² + 4y² + 16z² + 4xy + 16yz + 8xz
⬆ is the expansion of the given Expression .
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