find (7x-3y)^2 with suitable identity
Anonymous:
comment over here if any doubts :-)
ok
:-)
Answers
Answered by
24
Hi there !!
Given,
to find (7x - 3y)² using algebraic identity
It is seen that the following expression is in the form of the identity (a - b)² = a² - 2ab + b² where a = 7x and b = 3y
Therefore,
(7x - 3y)² = (7x)² - 2(7x)(3y) + (3y)²
Thus,
(7x - 3y)² = 49x² - 42xy + 9y²
Given,
to find (7x - 3y)² using algebraic identity
It is seen that the following expression is in the form of the identity (a - b)² = a² - 2ab + b² where a = 7x and b = 3y
Therefore,
(7x - 3y)² = (7x)² - 2(7x)(3y) + (3y)²
Thus,
(7x - 3y)² = 49x² - 42xy + 9y²
:-)
Answered by
15
hi
we will use the identity (a-b)² = a² + b² - 2ab
( 7x - 3y)² = 49x² + 9y² - 42xy
HOPE it helps
dont forget to mark brainliast
we will use the identity (a-b)² = a² + b² - 2ab
( 7x - 3y)² = 49x² + 9y² - 42xy
HOPE it helps
dont forget to mark brainliast
Similar questions