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 gives two solutions, one when ± is addition và one when it is subtraction.

Bạn đang xem: Solve


This equation is in standard form: ax^2+bx+c=0. Substitute -3 for a, 7 for b, and -1 for c in the quadratic formula, frac-b±sqrtb^2-4ac2a.
*

3x2+7x-1=0 Two solutions were found : x =(-7-√61)/6=-2.468 x =(-7+√61)/6= 0.135 Step by step solution : Step 1 :Equation at the kết thúc of step 1 : (3x2 + 7x) - 1 = 0 Step 2 :Trying lớn ...
3x2+7x-10=0 Two solutions were found : x = -10/3 = -3.333 x = 1 Step by step solution : Step 1 :Equation at the kết thúc of step 1 : (3x2 + 7x) - 10 = 0 Step 2 :Trying to lớn factor by splitting ...
displaystylex=left(frac-7+sqrt2056 ight.anddisplaystyleleft(x=frac-7-sqrt2056 ight. Explanation:This is a quadratic equation with respect ...
3x2+7x-18=0 Two solutions were found : x =(-7-√265)/6=-3.880 x =(-7+√265)/6= 1.546 Step by step solution : Step 1 :Equation at the kết thúc of step 1 : (3x2 + 7x) - 18 = 0 Step 2 :Trying to ...
-3x2+5x-1=0 Two solutions were found : x =(-5-√13)/-6= 1.434 x =(-5+√13)/-6= 0.232 Step by step solution : Step 1 :Equation at the kết thúc of step 1 : ((0 - 3x2) + 5x) - 1 = 0 Step 2 : Step ...
How vị you find the discriminant & how many solutions does displaystyle-3x^2+7x-2=0 have?
https://socratic.org/questions/how-do-you-find-the-discriminant-and-how-many-solutions-does-3x-2-7x-2-0-have
Nghi N. May 9, 2015 f(x) - 7x^2 + 7x - 2 = 0D = d^2 = b^2 - 4ac = 49 - 24 = 25.-> d = +-5There are 2 solutions (real roots) displaystylex1=frac76+frac5-6=frac26=frac13 ...
d = +-5There are 2 solutions (real roots) x, 1, equals, start fraction, 7, divided by, 6, kết thúc fraction, plus, start fraction, 5, divided by, minus, 6, kết thúc fraction, equals, start fraction, 2, divided by, 6, over fraction, equals, start fraction, 1, divided by, 3, over fraction ..." role="text" class="MathExpression_mathExpression__22QI1 ">
More Items
*
*

*
*
*

All equations of the khung ax^2+bx+c=0 can be solved using the quadratic formula: frac-b±sqrtb^2-4ac2a. The quadratic formula gives two solutions, one when ± is addition and one when it is subtraction.
This equation is in standard form: ax^2+bx+c=0. Substitute -3 for a, 7 for b, và -1 for c in the quadratic formula, frac-b±sqrtb^2-4ac2a.
Quadratic equations such as this one can be solved by completing the square. In order khổng lồ complete the square, the equation must first be in the khung x^2+bx=c.

Xem thêm: Công Thức Tính Tổng Các Số Liên Tiếp, Cách Tính Tổng Một Dãy Số Liên Tiếp


Divide -frac73, the coefficient of the x term, by 2 khổng lồ get -frac76. Then add the square of -frac76 to both sides of the equation. This step makes the left hand side of the equation a perfect square.
*
*

*
*