3(2x+5)(2x-5), 5 is the missing term.
D) Definition of Equilateral Triangle
e) Vertical Angles
f1) ΔTVS <span>≅ </span>ΔUVR
f2) Side Angle Side Postulate
g) Definition of Congruent Triangles
Hope that helps!
The number is 8. 8x6=48, 8x5=40, 48-40=8.
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This will help you find what your looking for
