Need Help solving this math problem.

Question

A square vegetable garden is to be tilled and then enclosed with a fence. If the fence costs $1.50 per foot and the cost of preparing the soil is $0.40 per ft², determine the size of the garden that can be enclosed for $180.00.

Answer 1

1.50(4x) + 0.40x² = 180

Can you solve for x and answer?