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Solve the equation 4x^2 - 12x = 7 algebraically for x.
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Solve the equation 4x^2 - 12x = 7 algebraically for x.

User Parsa
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1 Answer

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4x^2-12x=7\\4x^2-12x-7=0\\x=(-b+-√(b^2-4ac))/(2a)\\x=(-(-12)+-√((-12)^2-4(4)(-7)))/(2(4))\\x=(12+-√(144+112))/(8)\\x=(12+-√(256))/(8)\\x=(12+-16)/(8)\\x=(-4,28)/(8)\\x=(-1)/(2),(7)/(2)

x = -0.5, 3.5
User IMHO
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