Question

please give fully solution ​

Answer 1

Answer:

1.

$5x {}^{2} - 29x + 42$

$= 5x {}^{2} - 15x - 14x + 42$

$= 5x(x - 3) - 14(x - 3)$

$= (5x - 14)(x - 3)$

2

$x {}^{2} + 10x - 144$

$= {x}^{2} + 18x - 8x - 144$

$= x(x + 18) - 8(x + 18)$

$= (x - 8)(x + 18)$

there are the simplified forms

hope this is helpful