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Which equation shows the quadratic formula used correctly to solve 7x2 = 9 + x for x?
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Which equation shows the quadratic formula used correctly to solve 7x2 = 9 + x for x?

User Smruti Ranjan Rana
by
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2 Answers

4 votes

Answer:

D

Explanation:

User Fabian Horlacher
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8.8k points
3 votes
For future reference, use a * to show the multiplication sign because in math x is a variable. 7*2 = 9 + x

Now multiply 7*2= 14

14 = 9 + x

Now subtract 9 from both sides to isolate the x

5 = x or x= 5
User Jingle
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8.9k points
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