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Solve Using the Quadratic Formula x^2-4=0. x2 − 4 = 0 x 2 - 4 = 0. Use the quadratic formula to find the solutions. −b±√b2 −4(ac) 2a - b ± b 2 - 4 (a c) 2 a. Substitute the values a = 1 a = 1, b = 0 b = 0, and c = −4 c = - 4 into the quadratic formula and solve for x x. 0±√02 −4⋅(1 ⋅−4) 2⋅1 0 ± 0 2 - 4 ⋅ (1 ⋅ - 4 ...
x=\frac{0±\sqrt{0^{2}-4\left(-4\right)}}{2} This equation is in standard form: ax^{2}+bx+c=0. Substitute 1 for a, 0 for b, and -4 for c in the quadratic formula, \frac{-b±\sqrt{b^{2}-4ac}}{2a}.
The final solution is all the values that make (x+2)(x−2) = 0 (x + 2) (x - 2) = 0 true. x = −2,2 x = - 2, 2. Free math problem solver answers your algebra, geometry, trigonometry, calculus, and statistics homework questions with step-by-step explanations, just like a math tutor.
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The solutions to the equation x² - 4 = 0 are x = 2 and x = -2. To find the solution (s) of the equation x² - 4 = 0, we can solve for x by factoring or using the quadratic formula. 1. Factoring: Rearrange the equation: x² - 4 = 0. (x - 2) (x + 2) = 0. Set each factor equal to zero: x - 2 = 0 or x + 2 = 0.
Explanation: The easiest way to solve this quadratic equation is to isolate x2 on one side of the equation, then take the square root of both sides. To do that, add 4 to both sides of the equation. x2 − 4 + 4 = 4. x2 = 4. Taking the square roots of both sides of the equation will get you. √(x2) = √4. = ± 2 = {x1 = −2 x2 = 2.
Free solve for x calculator - solve the equation for x step-by-step.
Examples. \left. \begin {cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end {cases} \right. Solve your math problems using our free math solver with step-by-step solutions. Our math solver supports basic math, pre-algebra, algebra, trigonometry, calculus and more.
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Examples. \left. \begin {cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end {cases} \right. Online math solver with free step by step solutions to algebra, calculus, and other math problems. Get help on the web or with our math app.