Question

I think the answer is -21y^2 + 50y- 21 but I’m not sure. Can someone check it over?

Answer 1

ok the answer is wrong because

when you multiply them you get

-25y^2 + 50y -21

because 5y*-5y is -25y^2 not 21y^2

Answer 2

You’re correct. That’s is the right answer.