Respuesta :

charlief22

Greetings!

When expanding brackets, you simply multiply whatever is inside the brackets by what is outside:

[tex](7x * x) + (7x * 20)[/tex]

Which would result in the answer being:

[tex]7x^{2} + 140x[/tex]


Hope this helps!

gmany

Answer:

7x² + 140y

Step-by-step explanation:

Use the distributive property a(b + c) = ab + ac

7x(x + 20) = (7x)(x) + (7x)(20) = 7x² + 140y