Are x = 10 and x = -20 Solutions to (x-10)(x+20)?
“(x-10)(x+20) solutions”
Summary
Solving the factored equation (x‑10)(x+20)=0 requires each factor to equal zero. Setting x‑10=0 gives x=10, and setting x+20=0 gives x=‑20. Thus the two solutions are x = 10 and x = ‑20.
Sources 60 searched
- The most common errors in undergraduate mathematics
That's because, at the end of your computational procedure, you'll have not only the solution(s) to the original problem, but possibly also some additional numbers that do not solve the original problem. How do you check for them? Just plug each of your answers into the original problem, to see whether it works. Many students, unfortuntely, omit that last step. ... x2+4x+4. By adding and subtracting appropriate amounts to both sides of the equation (a reversible step), we obtain · x2+2x–8 = 0.
- Common Math Errors
We missed the \(x = 0\) in the first attempt because we tried to make our life easier by “simplifying” the equation before solving. While some simplification is a good and necessary thing, you should NEVER divide out a term as we did in the first attempt when solving.
- Solve quadratic equation -x^2+10x = 0
Divide the factored form into two linear equations to get solutions.
- (X-10)(x-20)=0 - solution
If it's not what You are looking for type in the equation solver your own equation and let us solve it. Simplifying (X + -10)(x + -20) = 0 Reorder the terms: (-10 + X)(x + -20) = 0 Reorder the terms: (-10 + X)(-20 + x) = 0 Multiply (-10 + X) * (-20 + x) (-10(-20 + x) + X(-20 + x)) = 0 ((-20 * -10 + x * -10) + X(-20 + x)) = 0 ((200 + -10x) + X(-20 + x)) = 0 (200 + -10x + (-20 * X + x * X)) = 0 (200 + -10x + (-20X + xX)) = 0 Reorder the terms: (200 + -20X + -10x + xX) = 0 (200 + -20X + -10x + xX) = 0 Solving 200 + -20X + -10x + xX = 0 Solving for variable 'X'. Move all terms containing X to the left, all other terms to the right.
- Equation Solver: Step-by-Step Calculator - Wolfram|Alpha
Free Equation Solver helps you to calculate linear, quadratic and polynomial systems of equations. Answers, graphs, roots, alternate forms.
- Wolfram|Alpha Examples: Algebra
Interactive algebra calculators for solving equations, polynomials, rational functions, simplification, vectors, matrices, linear algebra, quaternions, finite groups, finite fields, domain & range.
- Equation Solver | Free Math Help
Free equation solver with step-by-step solutions. Solve linear, quadratic, and other equations in one variable and see the work shown.
- Math Equation Solver | Order of Operations
Solve equations with PEMDAS order of operations showing the work. See the steps to to solve math problems with exponents and roots using order of operations.
- solve form - Equations and Inequalities
The value x = 10 was incorrect because of a sign error. We must be especially careful to write the correct sign for each number when solving equations. EXAMPLE 5 Find the value of x that satisfies the equation 1/5+x = −1/10+1/2 · To combine the fractions, the fractions must have common ...
This fact check is free and donation-based. $1 powers ~30 fact-checks.
