The given quadratic expression; 5b² -6b -2 is prime because the discriminant is not a perfect square.
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What is the discriminant of the expression?</h3>
According to the task content; it is required to identify if the expression is prime.
On this note, it follows that the discriminant of the expression can be evaluated as follows;
= 36 -(4× 5 × -2)
= 76.
Hence, the expression is prime since 76 is not a perfect square.
Read more on discriminant;
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The answer would be y = 3.1
19.9 + 8 = 9y
27.9 = 9y
27.9/9 = y
3.1 = y
y = 3.1.
My only issue is that it says numbers between. It does not say including. Therefore, I think you want to use > and < instead of the ones with equals signs attached.
Answer:
I solved the question in three methods factorization, completing the square and quadratic equation . the continuation of completing the square is on the next page titled page 3
hope it helps
