Based on the work shown on the right, check all of the possible solutions of the equation.
-8
-2
d .
√2.1-x=4
2x = 1-4
2x = (x-4)2
2x = 12-8.x+16
0 = 1.2-10x+16
0 = (x - 2)2-8)
o
0 0 O
2
O
00
DONE

Solution is x = 8.

Step-by-step explanation:

2 is not a solution as √2*2 - 2 is not equal to -4.

geometry: triangles

solvers

lessons

answers archive

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