Question

4-a2+2ab-b2
$4 - a2 + 2ab - b2$
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Answer 1

Answer:

(1): "b2" was replaced by "b^2". 1 more similar replacement(s).

STEP

1

:

STEP

2

:

Pulling out like terms

2.1 Pull out like factors :

-a2 - 2ab + b2 - 4 =

-1 • (a2 + 2ab - b2 + 4)

Final result :

-a2 - 2ab + b2 - 4

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