Answer:
Step-by-step explanation:
The proof of the polynomial identity shows that the left side equals the right side. To find what comes next, simplify the left side using order of operations (PEMDAS) by doing the exponent first, combing like terms and then simplifying.
simplifies to
41
x=12
so y=3⋅12 +5
=36+5
=41
CD is congruent to XY, DA is congruent to YZ and AC is congruent to ZX even tho i'm not able to see properly your image
5 and 4
3 and 6
hope this helps!