Answer:
6. 8b²-5b-4
7. -3x²+9x-4
8. 3
9. 6a+15
Step-by-step explanation:
you will subtract/add the numbers with the same variables and exponent.
ex. (number 6) 7b²+ b²= 8b²
5b= 5b 8b²+5b-4
1-5= -4
(plus 5b because it didnt come out to a negative) if you have any questions, say in the comments and ill try my best to help
Answer:
it is because 20 + 20 is 40 and then 40 - 20 = 20
2(AB)+ 16= 24
⇒ 2(AB)= 24 -16
⇒ 2(AB)= 8
⇒ AB= 8/2
⇒ AB= 4
Final answer: AB=4~
Answer:
1/8+1/4
=1/8+2/8
=3/8
