Simplify the expression below. 4x(3x − 7) − 19x2

The answer is

Step-by-step explanation:

4x(3x − 7) − 19x²

Expand the terms

We have

12x² - 28x - 19x²

Group like terms

That's

12x² - 19x² - 28x

Simplify the terms

We have the final answer as

Hope this helps you

geometry: triangles

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call the larger triangle abc

then the smaller triangle cde is similar to abc (all angles are equal, aaa).  

ab is the side that is 36, and we wish to find de, the side corresponding to ab

area_cde = area_abc - area_cde --> area_abc / area_cde = 2

let x=length of de

ratio of areas = (ratio of sides)^2

+2+=+%2836%2fx%29%5e2+

+2+=+1296%2fx%5e2+

++x%5e2+=+1296%2f2+=+648+

25.45584

10 b/c 5*2 =10

step-by-step explanation: