Sam decides to build a square garden. If the area of the garden is 25x2 + 30x + 9 square feet, what is the length of one side of the garden?

(3x + 5) feet

(3x − 5) feet

(5x + 3) feet

(5x − 3) feet

Question

Sam decides to build a square garden. If the area of the garden is 25x2 + 30x + 9 square feet, what is the length of one side of the garden?

 (3x + 5) feet

 (3x − 5) feet

 (5x + 3) feet

 (5x − 3) feet

parthkohli · Answer

Hint: One side is square root of the area.

parthkohli · Answer

Find$$\sqrt{25x^2 + 30x + 9} $$

anonymous · Answer

square the given options.. whichever gives you the area.. is the right choice..

parthkohli · Answer

$$25x^2 +30x + 9 \implies 25x^2 + 15x + 15x + 9 \implies 5x(5x + 3) + 3(5x + 3) $$$$ \implies (5x + 3)(5x + 3) \implies (5x  + 3)^2$$

parthkohli · Answer

What is $\sqrt{(5x+ 3)^2}$

anonymous · Answer

I CANT FIND MY CALCULATOR!!!

parthkohli · Answer

No need to.$$\sqrt{number ^2}=number $$

anonymous · Answer

-_- oh... hehe

anonymous · Answer

so its the third one?