Will mark brainliest! !

a rectangle has a perimeter of (26x+16)cm and an area of (42x^2+51x+15)cm^2. find the dimensions of the rectangle in terms of x.

The dimensions are:

by

Step-by-step explanation:

The area of the rectangle is given as

The factored form of this quadratic trinomial gives the dimensions of the rectangle.

We factor 3 first to obtain;

We split the middle term to get;

We factor within the parenthesis to get;

We factor further to get;

The dimensions are:

by

Then the perimeter will be

it would open into a square depending on the type of envelope i’m not sure about the second part