Question

Question

Answer 1

Answer:

16

Step-by-step explanation:

4 * sqrt( a^2 - b^2)

Let a = -5 and b =3

4 * sqrt( (-5)^2 - 3^2)

Do the squaring first

4 * sqrt( 25 - 9)

Subtract inside the square root

4 * sqrt( 16)

Take the square root

4 * 4

Multiply 16

Answer 2

Answer:

$\Large \boxed{16}$

Step-by-step explanation:

$4\sqrt{a^2-b^2 }$

$\sf Plug \ in \ the \ values \ for \ a \ and \ b.$

$4\sqrt{-5^2-3^2 }$

$4\sqrt{25-9 }$

$4\sqrt{16}$

$4 \times 4=16$