Solve this equation: -7.2 + 12 - 2.c
1 answer:
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Answer:
The positive integer is 3.
Step-by-step explanation:
Let 'x' be the integer
Given that five times of a positive integer is less than twice its square by 3.
so
5 times of x =
3 less than twice of the square of x =
so the equation becomes
Factorise
Using the zero factor principle
if ab=0, then a=0 or b=0 (or both a=0 and b=0)
solving
Subtract 1 from both sides
Simplify
Divide both sides by 2
Simplify
Also solving
Add 3 to both sides
simplify
Thus, we got integers:
x = 3 or x = -1/2
- As x can not be a negative integer according to the question.
Therefore, the positive integer is 3.