every equations the the kind ax^2+bx+c=0 have the right to be fixed using the quadratic formula: frac-b±sqrtb^2-4ac2a. The quadratic formula gives two solutions, one as soon as ± is enhancement and one once it is subtraction.

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This equation is in standard form: ax^2+bx+c=0. Substitute 1 because that a, -2 because that b, and -4 because that c in the quadratic formula, frac-b±sqrtb^2-4ac2a.
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displaystylex=1pmsqrt5 Explanation: displaystylex^2-2x=4displaystylex^2-2x+1=4+1displaystyleleft(x-1 ight)^2=5displaystyleleft(x-1 ight)=pmsqrt5 ...
3x2-2x-4=0 Two solutions were discovered : x =(2-√52)/6=(1-√ 13 )/3= -0.869 x =(2+√52)/6=(1+√ 13 )/3= 1.535 step by step solution : step 1 :Equation in ~ the finish of action 1 : (3x2 - 2x) - 4 = 0 ...
6x2-2x-4=0 Two solutions were found : x = -2/3 = -0.667 x = 1 step by action solution : step 1 :Equation at the finish of step 1 : ((2•3x2) - 2x) - 4 = 0 action 2 : action 3 :Pulling out favor ...
-x2-2x-4=0 Two remedies were found : x =(2-√-12)/-2=1+i√ 3 = -1.0000-1.7321i x =(2+√-12)/-2=1-i√ 3 = -1.0000+1.7321i action by action solution : step 1 : step 2 :Pulling out favor terms : ...
displaystylex>frac3+sqrt1372left( extXX ight)quad extorquadleft( extXX ight)x{
-3x2-2x-4=0 Two remedies were found : x =(2-√-44)/-6=1/-3+i/3√ 11 = -0.3333-1.1055i x =(2+√-44)/-6=1/-3-i/3√ 11 = -0.3333+1.1055i step by action solution : step 1 :Equation in ~ the finish of action ...
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All equations of the form ax^2+bx+c=0 can be solved using the quadratic formula: frac-b±sqrtb^2-4ac2a. The quadratic formula provides two solutions, one as soon as ± is addition and one as soon as it is subtraction.
This equation is in traditional form: ax^2+bx+c=0. Instead of 1 for a, -2 for b, and -4 because that c in the quadratic formula, frac-b±sqrtb^2-4ac2a.
Quadratic equations such as this one have the right to be addressed by completing the square. In bespeak to finish the square, the equation must very first be in the form x^2+bx=c.

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Divide -2, the coefficient of the x term, by 2 to acquire -1. Then include the square that -1 come both political parties of the equation. This step makes the left hand next of the equation a perfect square.
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