How do you evaluate $(- - 4) ^ { 2} - 8\cdot - 4- 9$ ?

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Answer 1 · 2018-02-10T06:55:29

The answer is $71$

Assuming the equation is

$(--4)^2-(8*-4)-9$

Since $--a=+a=a$ , The equation becomes

$4^2-(8*-4)-9$

As we multiply first in this equation

Since $4^2=16$ and $-4*8=-64$ , the equation becomes,

$16-(-64)-9$ Then, The equation Simplifies to,...
$16+64-9$

$71$

How do you evaluate (- - 4) ^ { 2} - 8\cdot - 4- 9(- - 4) ^ { 2} - 8\cdot - 4- 9?