Question

Find discriminant of 3x2-under root 5x -2

Answer 1

Question

Find discriminant of 3x² - √5x -2.

Solution

Given equation :-

• 3x² - √5x - 2 = 0.

Find :-

• discriminant of given equation

Explanation

Formula

★ Discriminant(D) = B² - 4AC

Compare this equation, by general equation,

• Ax² + Bx + C = 0

where,

• A = 3
• B = √5
• C = -2

So,

➥ Discriminant(D) = (√5)² - 4 × 3 × (-2)

➥ Discriminant(D) = √5 × √5 - 12 × (-2)

➥ Discriminant(D) = 5 + 24

➥ Discriminant(D) = 29

which is greater than Zero. ( >0).

Additional Knowledge

1. If B² - 4AC > 0 , roots will be real .
2. If B² - 4AC <0 , roots will be imaginary .

_________________

Answer 2

Answer:

d=whole under root b^2-4ac

b= -root5

a=3

c is -2

whole under○○ot《 5-(4×3×-2)》

underrrot 29