Question

For equation 2m² = 5m - 5 find value of discriminant​

Answer 1

2m² = 5m - 5

2m² - 5m + 5 = 0

a=2

b= -5

c = 5

discriminant (d) = b² - 4ac

= (-5)² - 4(2)(5)

= 25 - 40

= -15

so, the answer is -15

hope it was helpful.....

Answer 2

Given:

• Quadratic Equation = 2m² = 5m - 5.

To Find:

• Value of Discriminant (∆) = ?

Formula Used:

• ∆ = b² - 4ac.

Solution:

Let's bring the given equation in it's orginal quadratic equation form. i.e,

➛ 2m² - 5m + 5 = 0.

Comparing it with ax² + bx + c = 0.

Here,

a = 2.

b = -5.

c = 5.

Substituting values,

➙ ∆ = (-5)² - 4 × 2 × 5

➙ ∆ =25 - 8 × 5

➙ ∆ = 25 - 40

➛ ∆ = -15.

Hence,

• Value of Discriminant is -15.

ExtraShots:

• α + β = - b/a.

• α × β = c/a.

• α² + β² = (α + β)² - 2αβ.

• α³ + β³ = (α + β)³ - 3αβ × (α + β)

• α³ - β³ = (α - β)³ - 3αβ × (α - β)