What two numbers add up to 1 and multiply to -6

I’m doing some practice exam questions for biology, and i’m not sure how to do these 3 parts to the question.

Modern whales developed their traits through natural selection what occurs during the process of natural selection

According to your text, should be in the native language of the parents or guardians whenever possible. a. an email b. consent forms c. oral approval d. storybooks loaned out