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Exercise

$x^2-18x-40=0$

Step-by-step Solution

Learn how to solve problems step by step online. Solve the quadratic equation x^2-18x+-40=0. Factor the trinomial x^2-18x-40 finding two numbers that multiply to form -40 and added form -18. Rewrite the polynomial as the product of two binomials consisting of the sum of the variable and the found values. Break the equation in 2 factors and set each factor equal to zero, to obtain simpler equations. Solve the equation (1).
Solve the quadratic equation x^2-18x+-40=0

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Final answer to the exercise

$x=-2,\:x=20$

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