Q3. A + B = 0 and AB = -36.
What is the value of A-B?
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Answer:
12
Step-by-step explanation:
(A+B)²=A²+B²+2AB
0=A²+B²-72
A²+B²=72
(A-B)²=A²+B²-2AB
(A-B)²=72+72
(A-B)²=144
A-B=12
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