Question

Find the equivalent expression for (x + 7)(x + 1)​

Answer 1

Answer:

$(x + 7)(x + 1) = {x}^{2} + 7x + x + 7 \\ = {x}^{2} + 8x + 7 \\ Answer:\: \: \: \: \: \: \boxed{{x}^{2} +8 x + 7}$

Answer 2

Answer:

x² + 8x + 7

General Formulas and Concepts:

Algebra I

• Terms/Coefficients/Degrees
• Expand by FOIL (First Outside Inside Last)

Step-by-step explanation:

Step 1: Define

(x + 7)(x + 1)

Step 2: Expand

1. Expand [FOIL]:                    x² + x + 7x + 7
2. Combine like terms:           x² + 8x + 7