Question

synthetic substitution x3 + 3x2 + 4

Answer 1

okay write it with all x powers

x3 +3x2 +0x1 +4

write the coefficients (not the constant)

1 3 0

now what is the value of x you need to find?

Answer 2

notice I wrote x1 even though these was none, that is why I wrong 0 as its coefficent