Question

find the value of hundred x square - 180 X Y + 81 y square for X is equals to 4 and Y is equals to 1 ​

Answer 1

Step-by-step explanation:

Equation = $100x^{2} -180xy+81y^{2}$

x = 4 and y = 1

$100x^{2} -180xy+81y^{2} =(10x)^{2} -2(10x)(9y)+(9y)^{2} =(10x-9y)^{2}$

Substitute the value of x in y in the above equation.

$(10*4-9*1)^{2} =(40-9)^{2} =31^{2} =961$

Answer = 961

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