mya1318
19.09.2019 •
Mathematics
Idon’t have idea how to solve this problem plz
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Ответ:
100
Step-by-step explanation:
I believe you meant x^2 - 20x; " ^ " denotes exponentiation.
Take half the coefficient of the x term (which in this problem is -20). We get -10. Now square this, obtaining 100.
Adding 100 to x^2 - 20x "completes the square."