davidz8536 davidz8536

15-07-2020
Mathematics

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What are the roots of the equation? x2−x−42=0 Enter your answers in the boxes.

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wegnerkolmp2741o wegnerkolmp2741o

15-07-2020

Answer:

x = 7 x = -6

Step-by-step explanation:

x^2−x−42=0

Factor

What two numbers multiply to -42 and add to -1

-7*6 = -42

-7+6 = -1

(x-7) (x+6) =0

Using the zero product property

x-7 =0 x+6 =0

x = 7 x = -6

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