If x = -4, calculate 2x squared - 5

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asked Feb 6, 2018 136k views

1 Answer

PlunkettBoy · Answer 1 · 2018-02-10T03:21:10+0000

You just substitute the value of x in the given equation:

f(x) = 2x^2 - 5

f(-4) = 2 (-4)^2 -5 = 27

f(x) : a name given to the equation
f(-4): refer to the equation when the value of the independent variable x has the value between the brackets.

If x = -4, calculate 2x squared - 5

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