Expand the expression $(x+3)(x+4)$. Choose the correct expanded form.

Step-by-step solution

1. Apply FOIL: First terms $x\ast x=x^2$.
2. Outer terms $x\ast 4=4x$.
3. Inner terms $3\ast x=3x$.
4. Last terms $3\ast 4=12$.
5. Combine like terms $4x+3x=7x$.
6. Write final expanded expression $x^2+7x+12$.

Concept tested: Expand product of two binomials

Published 4 October 2026 · How this solution was prepared and checked