alissablakeman alissablakeman

21-12-2018
Mathematics

contestada

What is the sign of − 4 a b −4ab when a > 0 a>0 and b < 0 b<0?

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PhantomWisdom PhantomWisdom

31-12-2018

Answer:

The sign is positive.

Step-by-step explanation:

a > 0 and b < 0

So, a·b < 0

⇒ -4·a·b > 0

⇒ -4·a·b - 4·a·b > 0

Hence, the sign will be positive

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soranyelisestepan soranyelisestepan

24-02-2021

Answer:

the answer is on top of me

Step-by-step explanation:

my mom is angry at me and im bored

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