Question

please help . tjjhhhhhhhh

Answer 1

Answer:

19 -  8√3

Step-by-step explanation:

(-4 + √2)^2

= (-4)^2 + 2(-4)(√3) + √3)^2

= 16 - 8√3 + 3

= 19 -  8√3

Answer 2

Answer:

D

Step-by-step explanation:

note that ($\sqrt{3}$ )² = 3

Given

(- 4 + $\sqrt{3}$ )² = (- 4 + $\sqrt{3}$)(- 4 + $\sqrt{3}$)

Expand using (a + b)² = a² + 2ab + b²

= (- 4 )² + 2(- 4$\sqrt{3}$ ) + ( $\sqrt{3}$ )²

= 16 - 8$\sqrt{3}$ + 3

= 19 - 8$\sqrt{3}$