Which rational expression is undefined when a = 1 ? (6a ^ 2 - 6)/(7a + 7) (8a ^ 2)/(5a - 10) (10a + 6)/(- a ^ 2 + 1) (9a - 3)/(3a ^ 2) Please help

step-by-step explanation:

5×5×5+2(8)÷2(2)+3(3)

15+16÷4+9

31÷13

do 31÷13 and u will get ur answer

exa:

)

3+11

14

step-by-step explanation:

from this example, we can see that subtracting with integers is the same as adding the opposite. we can solve using a number line or by using the saying "keep, change, change" to us solve. it is important to remember that we can subtract a negative and end up with a larger number than we started with.

i think it might be a but you might want a second opinion

hope this !

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