Plzz what the answer I’m stuck

Rewrite the following quadratic functions in intercept or factored form. show your work. y = 5x^2 + 10x

Find the missing dimension! need asap! tiny square is a =3025 in ²

Type the correct answer in each box. spell all the words correctly, and use numerals instead of words for numbers. if necessary, use / for the fraction bar(s).