Question

please solve the problem​

Answer 1

$13.$

$21b - 32 + 7b - 20$

$\orange{ \therefore 28b - 52}$

$14.$

$z = 10$

$\implies {z}^{3} - 3(z - 10)$

$\implies {(10)}^{3} - 3(10- 10)$

$\implies 100 0 - 3(0)$

$\orange{\therefore 100 0}$

HOPE IT HELPS!!