Answer:
[ - 2, - 7 ]
Step-by-step explanation:
Answer:
- Prime: 3
- GCF: 1
- Factoring Trinomials: 4
- Difference of Squares: 2
- Perfect Square Trinomial (PST): 5
Step-by-step explanation:
1. Each term has an even coefficient, so a factor of 2 can be removed:
2(3x^2 +7x -15)
The remaining quadratic factor is prime.
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2. Each of these two terms is a square, so this is the difference of two squares.
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3. This cubic has one irrational negative real root. It is prime.
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4. This trinomial factors in the usual way: (x +15)(x -2). It is factored by "factoring trinomials."
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5. The magnitude of the x-coefficient is double the square root of the (positive) constant, so this is a perfect square trinomial.
Using the properties of inequalities:
Subtract -2 from each side of the inequality -2 + x > 10
Remember -2 - -2 becomes -2 + 2 = 0 <u>- -2 + x > --2
</u>10 - -2 becomes 10 + 2 =12<u /> 0 + x > 12
So the final solution would be x > 12.
Therefore x would have to be all numbers greater than 12.
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