lia3554 lia3554

28-08-2020
Mathematics

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The difference between a number squared, and that same number is 30. What is the number

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wolf1728 wolf1728

28-08-2020

Answer:

n^2 = n + 30

n^2 -n -30 = 0

Solving by quadratic formula

numbers equal 6 AND -5

DOUBLE -CHECK

6^2 -6 -30 = 0

36 -6 - 30 = 0 CORRECT

-5^2 - -5 -30 = 0

25 +5 -30 = 0 CORRECT

Two numbers 6 and -5

Step-by-step explanation:

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