evaluate 1/2a6-4b^2 for a=-2 and b=4

a ) 2
b ) 1.2
c ) 3
d ) 4

1 answer

To evaluate the expression, substitute the values of a and b into the given expression:

1/(2a^6 - 4b^2)

= 1/(2(-2)^6 - 4(4)^2)

Simplifying further:

= 1/(2(64) - 4(16))

= 1/(128 - 64)

= 1/64

Therefore, the value of the expression when a = -2 and b = 4 is 1/64, which is not listed as an option.