Answer:
4c² + 11cd + 5d
Step-by-step explanation:
To add monomials, you have to look at the variables that are accompanied by their coefficients. In the given problem, (–4c2 + 7cd + 8d) + (–3d + 8c2 + 4cd), you can combine both cd ut nt cd and c² and cd and d and d and c² because they have different variables.
(–4c2 + 7cd + 8d) + (–3d + 8c2 + 4cd)
(-4c² + 8c²) + (7cd + 4cd) + (8d - 3d)
4c² + 11cd + 5d
Answer:
15
Step-by-step explanation:
Since, triangle ABC is the enlargement of triangle XYZ.
So, corresponding sides of both the triangles would be in proportion.

Answer:
d
Step-by-step explanation:
1+1^2=4
2+1=3^2=9
3+1=4^2=16
^(times by self)