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Casey Phillips
Mathematics
29 March, 19:53
Solve the equation 7x^2-8x=-1
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Karter Harvey
29 March, 19:57
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7x²-8x=-1
7x²-8x+1=0
on theorem Vieta if 7-8+1=0 ⇒x₁=1
(7x²-7x) - (x-1) = 0
7x (x-1) - (x-1) = 0
(x-1) (7x-1) = 0
x₂=1/7
Answer: x₁=1 x₂=1/7
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