Express the distance between the given numbers using absolute value. Then find the distance by evaluating the absolute value expression.

The expression is |-7-9|

You subtract the values and place absolute value bars on either side.

Evaluating that expression leads to 16 since

|-7-9| = |-16| = 16

Showing that the distance from -7 to 9 on the number line is 16 units.

the discriminant is 64 + 4*1*12 = 112

this is prime.

step-by-step explanation:

ok then what happened.