Question

Factorise x2+4x-21 pls tell​

Answer 1

Answer:

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

(x-3)(x+7) is your answer

Step-by-step explanation:

hopes it helps you