3 years ago

7. Which expression is a factor of x² + 2x – 15?

Mathematics

1 answer:

Lubov Fominskaja [6]3 years ago

7 0

Answer:

(x-3) is the correct expression

Step-by-step explanation:

To factor you split the expression apart -

x² + 2x – 15

This breaks up to (x+5)(x-3)

If you multiply (FOIL) these you get your expression x² + 2x – 15

Your answer choices do not include (x+5) so it must be (x-3)

I hope this helps!

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