Question

Solve the given equation 10n^2 - 5n + 72

Answer 1

Answer:

why waste time

use quadratic equation formula

Answer 2

Answer:

Step-by-step explanation:

Let's first check what is the Discriminant of this Equation:-

D⇒b²-4ac

here,a=10 , b=(-5) , c=72

⇒(-5)²-4(10)(72)

⇒25-2880

⇒(-2885)

D<0,So no real roots of this equation exists.

Learn More About Discriminant:-

• When b²-4ac > 0

When a, b, and c are real numbers, a ≠ 0 and the discriminant is positive, then the roots α and β of the quadratic equation ax² +bx+ c = 0 are real and unequal.

• When b²-4ac=0

When a, b, and c are real numbers, a ≠ 0 and the discriminant is zero, then the roots α and β of the quadratic equation ax²+ bx + c = 0 are real and equal.

• When b²-4ac<0

When a, b, and c are real numbers, a ≠ 0 and the discriminant is negative, then the roots α and β of the quadratic equation ax² + bx + c = 0 are unequal and not real. In this case, we say that the roots are imaginary.