81-90xy+25x²y², Factorize the given equation.
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Hi there!!!
its answer is (5xy-9)^2
for solution refer the image attached.
its answer is (5xy-9)^2
for solution refer the image attached.
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Solution :
81 - 90xy + 25x²y²
= 9² - 2*9*5xy + ( 5xy )²
*******************************
We know the algebraic identity:
a² - 2ab + b² = ( a - b )²
*****************************
= ( 9 - 5xy )²
= ( 9 - 5xy )( 9 - 5xy )
•••••
81 - 90xy + 25x²y²
= 9² - 2*9*5xy + ( 5xy )²
*******************************
We know the algebraic identity:
a² - 2ab + b² = ( a - b )²
*****************************
= ( 9 - 5xy )²
= ( 9 - 5xy )( 9 - 5xy )
•••••
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