Guys in this image they have given the formula for area of rectangleI

1.	Guys in this image they have given the formula for area of rectangleI cant understand the step given in green margin plz explain this plz guysdont spam
Answer» Answer:it is told that A=LB =l(L means length)root D square -l square now look carefully in above it is told that we all know the formula off a square -b square = (a+b )( a-b) so, if question is told A=lb then we should denote by d do it is written Lroot d square -l squre now in LAST step there is b so making b sing and putting value Step-by-step explanation: hope it help for you please vote me and follow me and make me a brainliest please

Guys in this image they have given the formula for area of rectangleI cant understand the step given in green margin plz explain this plz guysdont spam

Answer»

Answer:it is told that

A=L*B

=l(L means length)*root D square -l square

now look carefully in above it is told that

we all know the formula off a square -b square = (a+b )( a-b)

so, if question is told A=l*b then we should denote by d do it is written L*root d square -l squre

now in LAST step there is b so making b sing and putting value

Step-by-step explanation:

hope it help for you please vote me and follow me and make me a brainliest please