Question

14. x +4x-21 write it in the steps ​

Answer 1

Step-by-step explanation:

$x + 4x - 21 \\ \\ \bf\boxed{ 5x - 21}$

Answer 2

Answer:

(x+7)(x-3)

Step-by-step explanation:

$x^{2} +4x-21\\x^{2} +7x - 3x - 21\\(x^{2} +7x)+( - 3x - 21)\\x(x+7)-3(x+7)\\(x+7)(x-3)$