Answer:
f(-3) = 16
Step-by-step explanation:
Given:
f(x) = 2x² + x + 1
Required:
f(-3)
Solution:
Substitute x = -3 into f(x) = 2x² + x + 1
f(-3) = 2(-3)² + (-3) + 1
f(-3) = 2*9 - 3 + 1
f(-3) = 18 - 3 + 1
f(-3) = 16
To find percent error you use the following formula:

% error = (1.6 - 1.9)/1.9 * 100% = 15.79%
Answer:
a
Step-by-step explanation:
because 8-2 is 6. and 8 times 5 is 30.
Use the Pythagorean therm , you know the a^2+b^2=c^2
It would be
(X^4+2X^2) -119(X^2-2X) then you would simplify
X^4+2X^2-119X^2-2X
So it would be
X^4+117X^2-2X=0
So basically X is undefined