A+b=4,ab=-12.
Find a^2-b^2
Answers
Answered by
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Step-by-step explanation:
a+b=4
ab=-12
a²+b²=?
(a+b)² = (4)²
a²+b²+2ab = 16
a²+b²+2(-12) = 16
a²+b²-24 = 16
a²+b² = 40
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