How do you solve this difficult algebra problem?
F(x)= 2x^2-5x+3 and G(x)=1-4x-x^2
Calculate f(-2) + g(2)
F(x)= 2x^2-5x+3 and G(x)=1-4x-x^2
Calculate f(-2) + g(2)
2 Answers
Aug 12, 2018
Explanation:
#"substitute "x=-2" into" f(x) " and "x=2" into "g(x)#
#f(-2)=2(-2)^2-5(-2)+3#
#color(white)(f-(2))=(2xx4)+(-5xx-2)+3#
#color(white)(f(-2))=8+10+3=21#
#g(2)=1-(4xx2)-(2)^2#
#color(white)(g(2))=1-8-4=-11#
#f(-2)+g(2)=21+(-11)=21-11=10#
Explanation:
The key realization is that
Plugging in
Plugging in
We have been asked to find
Hope this helps!