Question

2 x square minus 5 equal to zero is a quadratic equation​

Answer 1

Answer:

x=√(5/2) (or) -√(5/2)

Step-by-step explanation:

Given that,

2x²-5=0 is a quadratic equation

the general form of quadratic equation is ax²+bx+c=0

so here,

a=2, b=0, c=-5

as we know that,

x=-b±√(b²-4ac)/2a

⇒x=-0±√(0)²-4(2)(-5)/2(2)

⇒x=±√(40)/4

⇒x=±2√10/4=±√10/2=±√(2×5)/2

⇒x=±√(5/2)

⇒x=√(5/2) (or) -√(5/2)

∴x=√(5/2) (or) x=-√(5/2)

HOPE THIS WOULD BE HELPFUL FOR YOU