Answer: f(x)=3x2+30x+65
Step-by-step explanation:
F(x)=3(x+5)2-10
Using bodmas
B= bracket
O=of
D= division
M= multiplication
A= Addition
S= subtraction
So we go with the bracket
(X+5)2
=(x+5)(x+5)
Open the bracket
=x2+5x+5x+25
=x2+10x+15
Substitute for (x+5)2
F(x)=3(x2+10x+25)-10
F(x)= 3x2+30x+75-10
F(x)= 3x2+30x+65
