3 years ago

Please help . tjjhhhhhhhh

Mathematics

2 answers:

natka813 [3]3 years ago

7 0

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

Crank3 years ago

6 0

Answer:

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 $\sqrt{3}$

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