Question

(y+5)*(y+7)

Answer 1

In your book they were like this though
(y+5)(y+7)

right? If so then you just FOIL

Answer 2

(y+5)(y+7) = y^2 + 5y + 7y + 35 = y^2 + 12y + 35.

Answer 3

nope it was just like this (y+5)*(y+7) ... multiply the binomials

Answer 4

Oh, well, same thing.

Answer 5

@Ahaanomegas did it correctly.

Answer 6

The product of two polynomials is the sum of the the products when each term of the first polynomial is multiplied by the second polynomial.

(y + 5) (y + 7)

= y(y + 7) + 5(y + 7)

= y² + 7y + 5y + 35

= y² + 12y + 35

Sorry, made an error earlier.