Answer: Can you explain more? you have to calculate it by an theorm
Step-by-step explanation:
Answer:
0
Step-by-step explanation:
x2 +4x-21=0. solve for x


First, plug in 5 for x:
| -5 * 5 + 12 | = |-25 + 12| = |-13|
Those two lines are absolute value, which measures the distance from the number to 0 on a number line. This distance is always positive.
The distance from -13 to 0 on a number line is 13. The answer is 13.
Answer:
A
Step-by-step explanation: