Question

(a-6)(a+1)+(2+a)(3-4a), если a=-1/1/3​

Answer 1

$- 3 {a}^{2} - 10a$

$- 3( \frac{1}{ \frac{1}{3} })^{2} - 10( \frac{1}{ \frac{1}{3} } ) = - 57$