Square root 2

If the square root of 3m2 +22 and -x = 0, and x=7, what is m?

Result

m1 =  3
m2 =  -3

Solution:

Checkout calculation with our calculator of quadratic equations.

Leave us a comment of example and its solution (i.e. if it is still somewhat unclear...):

Be the first to comment!

To solve this example are needed these knowledge from mathematics:

Looking for help with calculating roots of a quadratic equation? Do you have a linear equation or system of equations and looking for its solution? Or do you have quadratic equation?

Next similar examples:

1. Solve equation
solve equation: ?
Quadratic equation ? has roots x1 = 80 and x2 = 78. Calculate the coefficients b and c.
3. Roots
Determine the quadratic equation absolute coefficient q, that the equation has a real double root and the root x calculate: ?
4. Equation
Equation ? has one root x1 = 8. Determine the coefficient b and the second root x2.
Find the roots of the quadratic equation: 3x2-4x + (-4) = 0.
6. Evaluation of expressions
If a2-3a+1=0, find (i)a2+1/a2 (ii) a3+1/a3
7. Algebra
X+y=5, find xy (find the product of x and y if x+y = 5)
8. Variable
Find variable P: PP plus P x P plus P = 160
9. Variation equation
Solve combinatorics equation: V(2, x+8)=72
10. Discriminant
Determine the discriminant of the equation: ?
11. Solve 3
Solve quadratic equation: (6n+1) (4n-1) = 3n2
12. Tubes
Iron tubes in the warehouse are stored in layers so that each tube top layer fit into the gaps of the lower layer. How many layers are needed to deposit 100 tubes if top layer has 9 tubes? How many tubes are in bottom layer of tubes?
13. Reciprocal equation 2
Solve this equation: x + 5/x - 6 = 4/11
14. Equation with abs value
How many solutions has the equation ? in the real numbers?
15. Theorem prove
We want to prove the sentense: If the natural number n is divisible by six, then n is divisible by three. From what assumption we started?
16. Crystal water
The chemist wanted to check the content of water of crystallization of chromic potassium alum K2SO4 * Cr2 (SO4) 3 * 24 H2O, which was a long time in the laboratory. From 96.8 g of K2SO4 * Cr2 (SO4) 3 * 24 H2O prepared 979 cm3 solution of base. S
17. Difference AP 4
Calculate the difference of the AP if a1 = 0.5, a2 + a3 = -1.1