Find the exact length of the third side

≈7.48, exact would be 7.48331477355

Step-by-step explanation:

Pythagorean Theorem

c is the hypotenuse (longest side)

a and b are interchangeable

a^2 + b^2 = c^2

3^2 + 7^2 = c^2

(9 + 47 = 56)

56= c^2

= c

7.48 ≈ c

hope this helps :)

225x²+4=0

225x²=0-4

225x²=-4

x²=-4/225

x=±√-4/225