Expression of a variable from the formula + quadratic equation - 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
- Expression with powers
If x-1/x=5, find the value of x4+1/x4
- Equation 23
Find value of unknown x in equation: x+3/x+1=5 (problem finding x)
- Solve equation
solve equation: [(a2)+3]1/2 + [(a2)-3]1/2 = 5
- Evaluation of expressions
If a2-3a+1=0, find (i)a2+1/a2 (ii) a3+1/a3
- Non linear eqs
Solve the system of non-linear equations: 3x2-3x-y=-2 -6x2-x-y=-7
- 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.
- Trapezoid 15
Area of trapezoid is 266. What value is x if bases b1 is 2x-3, b2 is 2x+1 and height h is x+4
- Expressions 3
If k(x+6)= 4x2 + 20, what is k(10)=?
- The sum
The sum of the squares of two immediately following natural numbers is 1201. Find these numbers.
- 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.
If x+y=5, find xy (find the product of x and y if x+y = 5)
- Sphere equation
Obtain the equation of sphere its centre on the line 3x+2z=0=4x-5y and passes through the points (0,-2,-4) and (2,-1,1).
- 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.
- Reciprocal value
How do I calculate a number x that is 9 greater than its reciprocal (1/x)?
- Right triangle
Legs of the right triangle are in the ratio a:b = 2:8. The hypotenuse has a length of 87 cm. Calculate the perimeter and area of the triangle.
Area of trapezoid is 135 cm2. Sides a, c and height h are in a ratio 6:4:3. How long are a,c and h? Make calculation...
- Square root 2
If the square root of 3m2 +22 and -x = 0, and x=7, what is m?
Looking for help with calculating roots of a quadratic equation? Expression of a variable from the formula - math problems. Quadratic Equations Problems.