Question

The square of a number equals five times that number. Find the number.​

Answer 1

Answer:

5

Step-by-step explanation:

x^2 = 5 * x

(x^2 can be written as x * x)

x * x = 5*x

x = 5

Answer 2

Answer:

Let the number be x

Square of the number=x2 (2=square)

By the given condition

x2=5x

x2-5x+0=0

compare this equation with ax2+bx+c=0

a=1,b=-5,c=0

b2-4ac=(-5)2-4×1×0

=25-0

=25

By using formula method

x=-b+-√b2-4ac/2a

x=-(-5)+-√25/2×1

=5+-5/2

x=5+5/2 or x=5-5/2

x=10/2 or x=0/2

x=5 or x=0

:.The value of x are 5 and 0