If f(x) = x2 – 2x and g(x) = 6x + 4, for which value of x does (f + g)(x) = 0? –4 –2 2 4

-2

Step-by-step explanation:

The given functions :

Then the combine function of the above function is given by :-

Factorize by splitting middle term.

Substitute

Hence, at x=-2

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+

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