Realiza las sustracciones a) De 18m^4 n^3-6+ restar -2m^4 n^3 + 12

b) restar 12 x^3-7x^2 de x^4+7 x^3 + 1 x^2 - 5
5. 10. 2. 3
PORFA LO NECESITO AYUDA LES RUEGO ​

What is the prime factorization of 23 ?me with this question

Joe has some money in his bank account he deposits 45$ write an expression that represents the amount of money in joe's account

Given: ab ≅ cd and ad ≅ bc prove: abcd is a parallelogram. statements reasons 1. ab ≅ cd; ad ≅ bc 1. given 2. ac ≅ ac 2. reflexive property 3. △adc ≅ △cba 3. ? 4. ∠dac ≅ ∠bca; ∠acd ≅ ∠cab 4. cpctc 5. ∠dac and ∠bca are alt. int. ∠s; ∠acd and ∠cab are alt. int. ∠s 5. definition of alternate interior angles 6. ab ∥ cd; ad ∥ bc 6. converse of the alternate interior angles theorem 7. abcd is a parallelogram 7. definition of parallelogram what is the missing reason in step 3? triangle angle sum theorem sas congruency theorem sss congruency theorem cpctc