# Quadratic equation + expression of a variable from the formula - math problems

#### Number of problems found: 143

• Completing square Solve the quadratic equation: m2=4m+20 using completing the square method
• Substitution method Solve goniometric equation: sin4 θ - 1/cos2 θ=cos2 θ - 2
• Equation 23 Find value of unknown x in equation: x+3/x+1=5 (problem finding x)
• Hyperbola equation Find the hyperbola equation with the center of S [0; 0], passing through the points: A [5; 3] B [8; -10]
• Find the Find the number x, which if it increases by 2, then its square increases by 21 percent.
• The sum The sum of the squares of two immediately following natural numbers is 1201. Find these numbers.
• Expression with powers If x-1/x=5, find the value of x4+1/x4
• Equation of circle 2 Find the equation of a circle that touches the axis of y at a distance of 4 from the origin and cuts off an intercept of length 6 on the axis x.
• Expressions 3 If k(x+6)= 4x2 + 20, what is k(10)=?
• Reciprocal value How do I calculate a number x that is 9 greater than its reciprocal (1/x)?
• 1 page 1 page is torn from the book. The sum of the page numbers of all the remaining pages is 15,000. What numbers did the pages have on the page that was torn from the book?
• Solve equation solve equation: [(a2)+3]1/2 + [(a2)-3]1/2 = 5
• Non linear eqs Solve the system of non-linear equations: 3x2-3x-y=-2 -6x2-x-y=-7
• On line On line p: x = 4 + t, y = 3 + 2t, t is R, find point C, which has the same distance from points A [1,2] and B [-1,0].
• Roots and coefficient In the equation 2x ^ 2 + bx-9 = 0 is one root x1 = -3/2. Determine the second root and the coefficient b.
• On a line On a line p : 3 x - 4 y - 3 = 0, determine the point C equidistant from points A[4, 4] and B[7, 1].
• Geometric seq Find the third member of geometric progression if a1 + a2 = 36 and a1 + a3 = 90. Calculate its quotient.
• Square Suppose the square's sides' length decreases by a 25% decrease in the content area of 28 cm2. Determine the side length of the original square.
• Find parameters Find parameters of the circle in the plane - coordinates of center and radius: ?
• Sequences AP + GP The three numbers that make up the arithmetic sequence have the sum of 30. If we subtract from the first 5, from the second 4 and keep the third, we get the geometric sequence. Find AP and GP members.

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Looking for help with calculating roots of a quadratic equation? Quadratic Equations Problems. Expression of a variable from the formula - math problems.