WILL GIVE BRANLIEST! pls help thank u sm!! :-) u are all amazing

B

Step-by-step explanation:

Given

+ 3 = 12 ( subtract 3 from both sides )

= 9 ( square both sides )

x = 9² = 81 → B

(x+3)(x+7)

step-by-step explanation:

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.