The sum of a number and its square is 42. Which equation can be used to find the two numbers for which this is true?
O x + x = 42
O x2 + 2x = 42
0 x + x + 420
O x2 + 2x + 42 = 0

40 points. given: two congruent angles ∠c and ∠r are supplementary. prove: ∠r and ∠c are both right angles. it doesn't have to be exactly 10 rows.statements reasons1. 1. 2. 2. 3. 3. 4. 4. 5. 5. 6. 6. 7. 7. 8. 8. 9. 9. 10. 10.