Question

Multiply: (x + 3) (x + 7) Simplify and write your answer in Standard Form.

Answer 1

Answer:

$(x + 3)(x + 7) \\ (x)(x) + (x)(7) + (3)(x) + (3)(7) \\ = {x}^{2} + 7x + 3x + 21 \\ = {x}^{2} + 10x + 21$