Question

What’s the product (X+3)(x+7)

Answer 1

The answer is x²+10x+21

(x+3)(x+7)

=(x+3)(x+7)

=(x)(x)+(x)(7)+(3)(x)+(3)(7)

=x²+7x+3x+21

=x²+10x+21

Answer 2

Answer:

${x }^{2} + 10x + 21$

Step-by-step explanation:

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