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Ariel Blackwell
Mathematics
19 May, 03:26
What is the exact solutions of x2=5x+2
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Nathen Mcclain
19 May, 03:31
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Move all terms to the left of equal with changed sign
x²-5x-2 = 0
Solve with x₁,₂ = (-b±√Δ) / 2a
Δ = b²-4ac
call a (1) x², b - 5 and c - 2
x1,2 = ( - (-5) ±√ (-5) ²-4*1 * (-2)) / 2*1
x1,2 = (5±√25+8) / 2
x1,2 = (5 ± √33) / 2
x1 = (5+√33) / 2
x2 = (5-√33) / 2
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