Question

X square + 13 x - 168 ​

Answer 1

Hrya mate!!

We can solve it by middle term split method

${x}^{2} + 13x - 168 \\ {x}^{2} + (21 - 8)x - 168 \\ {x}^{2} + 21x - 8x - 168 \\ x(x + 21) - 8(x + 21) \\ (x - 8)(x + 21)$

Hope it helps u dear✌️✌️

Answer 2

Answer: (x-8) (x+21)

Step-by-step explanation:

x^2 + 21x - 8x - 168

x(x+21) -8(x+21)

(x-8) (x+21)