Question

is 2x^2 -9x +15 factorable

Answer 1

Multiply the first coefficient by the last term: 2*15 = 30

Now find two numbers that multiply to 30 and add to -9

Can you find two such numbers?

Answer 2

im not so sure about this one. :/ sorry i couldn't help.

Answer 3

If the discriminant is negative, there are no real roots. The discriminant is \(b^2-4ac\). In this case the discriminant is -39, so there are no real roots.

Answer 4

no, it is prime. You can always look at the graph of the function. If it crosses the x axis or touches the x axis you can factor it. This one is no where near the x axis

Answer 5

thank you!

Answer 6

you can factor these

Answer 7

you can not factor these