What is the polynomial 3y^2+(y+7)^2-15 after it has been fully simplified and written in standard form

Given :

A polynomial .

To Find :

The polynomial after fully simplified and written in standard form.

Solution :

 [ Using (a+b)² = a² + 2ab + b² ]

Therefore, the equation of the polynomial in standard and simplified form is

answer: a

step-by-step explanation:

you need to rotate this triangle about the origin 270 degrees clockwise to create the full square.