Solve x^2 – 10x = -21

Step-by-step explanation: x^2-10x+21=0

(x-7)(x-3)

x = 3,7

a

step-by-step explanation:

a

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.