She should plant 14 plants in each row
Step-by-step explanation:
Given
Total pepper plants = 196
As the plants have to be in square shape, the number of rows and the plants in each row will be equal
Let x be the number of rows
Then

Taking square root on both sides

Hence,
She should plant 14 plants in each row
Keywords: Square root, Radicals
Learn more about square root at:
#LearnwithBrainly