Question

x² + _______ -21 = (x+7)(x-3).fill in the blanks​

Answer 1

322

hope it helps......

Answer 2

Answer:

4x

Step-by-step explanation:

x^2+4x-21

x^2+(7-3)x-21

x^2+7x-3x-21

x(x+7)-3(x+7)

(x+7)(x-3)