The polynomial below is a perfect square trinomial of the form a2 - 2ab + b2.

Option B.

Step-by-step explanation:

Given the polynomial:

 Observe that and are perfect squares. Then, you can rewrite the polynomial in this form:

You can identify that:

Then, we can check if

Since , the polynomial IS NOT a perfect square trinomial of the form

12*c

step-by-step explanation:

c.   x=2.4cm

step-by-step explanation:

similar triangles are triangles which have the same shape but not the same size. this means their angle measures are equal but their side lengths are not instead they are proportional. to solve, we will set up a proportion and solve.

a proportion is two equal ratios set equal to each other. we form the ratios by finding corresponding sides (sides which match to each other on both triangles by their position). out ratios will be one side of the small triangle over the corresponding side on the big triangle as shown below:

.

to solve the proportion, we'll cross multiply by multiplying numerator with denominator across the equal sign.