For a rectangle, the two verticle sides should be congruent (of the same length)
2y+4=10
Subtract 4 from both sides
2y=6
Divide both sides by 2
y=3
Final answer: 3
The first step to solving this is to factor out the perfect square of 5²

next,, factor out the perfect square of p³

the root of a product is equal to the product of the roots of each factor
√5² √p² √p
now reduce the first index of the radical and the exponent with 2
5√p² √p
then reduce the second index of the radical and exponent with
5p√p
this means that the correct answer to your question is 5p√p
let me know if you have any further questions
:)
The answer is the area of the large square - the area of the cut out square
Area of large square: 12*12 = 144
Area of cut out square: 3*3 = 9
144 - 9 = 135
Answer: 135 square inches