Answer:
4(x - 7)2 - (x - 7) + 3
Explanation:
"A polynomial is a type of expression in which the exponents of all variables should be a whole number."
It is given that:
s(x) = x - 7 and t(x) = 4x2 - x + 3,
Now we have to find the expression is equivalent to (t × s)(x),
So take s(x) = x - 7 and substitute it in for every x in t(x).
Then,
t(x) = 4x2 - x + 3
t(x) = 4(x - 7)2 - (x - 7) + 3
Therefore, the expression equivalent to (t × s)(x) is 4(x - 7)2 - (x - 7) + 3.