Question

simplify using the Identify (x+3) (x+7)​

Answer 1

Answer:

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

Step-by-step explanation:

$(x + 3)(x + 7)$

$x(x + 7) + 3(x + 7)$

${x}^{2} + 7x + 3x + 21$

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