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erica [24]
3 years ago
10

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

Mathematics
1 answer:
Varvara68 [4.7K]3 years ago
5 0
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.
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