Hello Lexi!
<u><em>Answer: ⇒⇒⇒⇒⇒⇒
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Step-by-step explanation:
First you had to divide by 2 from both sides of equation.

Simplify.


Divide by the numbers.



Apply the fraction rule.


Then you divide by the number.



Add by 4 from both sides of equation.

Simplify it should be the correct answer.

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Hope this helps!
Thank you for posting your question at here on brainly.
Have a great day!
-Charlie
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B looks the most reasonable
To round it to the nearest unit it would be 38. To round it to the nearest ten it would be 40.
Answer:
If f(1)=0 then 1 is a root and (x-1) is a factor of f(x). divide f(x) by (x-1). you now have a quadratic. Find its roots by methods you know.
actually this factors by grouping:
f(x)=x³+3x²-x-3
= x²(x+3)-1(x+3)
=(x+3)(x²-1)
=(x+3)(x-1)(x+1) // difference of squares
By zero product property roots are
-3, -1, 1