Complete the following proof. Given: AB, CD are diameters. Prove: BD=CA

Step-by-step explanation:

1. if AB& CD are diameters, then AB=CD, and then OA=OB=OC=OD - radiuses.

It means, OA=OB and OC=OD.

2. m∠(AOC)=m∠(BOD);

3. according to the 1. & 2 ΔAOC=ΔBOD, then BD=CA

1. if AB& CD are diameters, then AB=CD, and then OA=OB=OC=OD - radiuses.

It means, OA=OB and OC=OD.

2. m∠(AOC)=m∠(BOD);

3. according to the 1. & 2 ΔAOC=ΔBOD, then BD=CA

-7

step-by-step explanation:

x^2 + 18x + 74 = (x + 9)^2 - 81 + 74

= (x + 9)^2 - 7.

so q = -7.

s

step-by-step explanation: