3 years ago

The square of a number is equal to 10 less than 7 times that number. What are the two possible solutions?

2 answers:

8 0

Translating the question
x^2=10-7x
rearrange
x^2+7x-10=0
using quadratic formula
x=-7+ \sqrt{49+40}all over 2 0r x=-7- \sqrt{49+40}all over 2
therefore x=1.2 or x=-1.2

Lena [83]3 years ago

4 0

X^2- 7x + 10 = 0 2 possible soultions are 5 or 2

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