Posted by Jeana on .
f(x+1)=8x^2+x3
f(x)=8x^2+x3
work:
#1 8(x+1)(x+1)+x3 then FOIL
8(x^2+x+x+2)+x3
8x^2+16x+16+x3
*8x^2+17x+13
#2 8(x)^2x3
8xx3
*7x3
I know on the first one you FOIL but im still getting it wrong?? The second one i thought was simple but im getting it wrong

Math 
bobpursley,
#1 8(x+1)(x+1)+x3 then FOIL
8(x^2+x+x+2)+x3 ****Nope, lots of errors, so here is what it should be..
8(x^2+x+x+1)+ (x+1)3
2)8(x)^2 + (x) 3
8x^2x3