Let’s solve the first problem from the list:
Problem 1: (x + 4)(x + 7)
We need to multiply these two binomials. We’ll use the FOIL method — that stands for
First,
Outer,
Inner,
Last.
-
First: Multiply the first terms in each parentheses → x * x =
x²
-
Outer: Multiply the outer terms → x * 7 =
7x
-
Inner: Multiply the inner terms → 4 * x =
4x
-
Last: Multiply the last terms → 4 * 7 =
28
Now add them all together:
x² + 7x + 4x + 28
Combine like terms (7x + 4x):
→ x² + 11x + 28
✔ Double-check:
(x + 4)(x + 7) = x(x+7) + 4(x+7) = x² + 7x + 4x + 28 = x² + 11x + 28 — correct!
Final Answer:
x² + 11x + 28
Parent Tip: Review the logic above to help your child master the concept of multiplying polynomials worksheet algebra 2.