X - the number
4x² - four times its square
if you subtract the number from four times its square:
4x²-x
the result is three:
4x²-x=3
Answer: second and third what?
Step-by-step explanation:
Answer:
52 m
Step-by-step explanation:
a^2 + b^2 = c^2
a^2 + 39^2 = 65^2
a^2 + 1521 = 4225
4225 - 1521 = 2704
Square root of 2704 = 52