5ᴍ(sǫᴜᴀʀᴇ) - 4ᴍ - 2 = 0...Find the root of Q.E
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Answer:
5m²-4m-2 = 0
a = 5,b = -4,c = -2
x = -b±√b²-4ac
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2a
x = -(-4)±√(-4)²-4(-5)(-2)
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2(5)
x = 4±√16+50
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10
x = 4±√56
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10
x = 4+√56 4-√56
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10 10
by simplifying √56 we get
x = 4+4√16 4-4√16
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10 10
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