The value of $$16x^4+25y^2-40x^2y$$​ at $$x=5$$​ and $$y=2$$​ is:

Correct option is B

Given:

Expression: $$16x^4 + 25y^2 - 40x^2y$$​​

Values: x = 5 and y = 2

Solution:

Substitute x = 5 and y = 2 into the expression:

​$$16(5)^4 + 25(2)^2 - 40(5)^2(2)$$​​

= 10000 + 100 −2000 = 8100

The value of the expression is 8100.