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denis23 [38]
3 years ago
11

What is the sign of −4ab when a > 0 and b < 0 *need NOW

Mathematics
2 answers:
My name is Ann [436]3 years ago
6 0

Answer:

The sign is positive.

Step-by-step explanation:

-4 is being multiplied by a negative and a positive number. The positive has no affect, but the negatives cancel out.

zhuklara [117]3 years ago
4 0

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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