Question

which of the following correctly explains why-14 is an acceptable answer to the equation x2=196?(-14x14=19614*14=196(-14)=196142=196

Answer 1

Daley, this is the solution:

We have: x² = 196

√x² = √196

x = +/- 14

Thus,

• 14 * 14 = 196

,

• -14 * -14 = 196

,

• 14² = 196

,

• -14² = 196

Any of these options could be taken to explain why +/- 14 is an acceptable value for x.