Question

What is the discriminant of 3x2 - 10x = -2? 76 94 106 124

Answer 1

Answer:

76

Step-by-step explanation:

Applying the formula to calculate the discriminant Δ=b2−4(a)(c)

Δ=b2-4(a)(c) with : a=3, b=−10, c=2

Δ=(−10)2−4⋅(3)⋅(2) = 100−24 = 76

The discriminant of the polynomial is equal to 76.

Answer 2

Answer:

Option A.

Step-by-step explanation:

The given equation is

$3x^2-10x=-2$

It can be rewritten as

$3x^2-10x+2=0$

If a quadratic equation is $ax^2+bx+c=0$, then discriminant is $D=b^2-4ac$.

In the given equation a=3, b=-10 and c=2. So, the value of discriminant is

$D=(-10)^2-4(3)(2)$

$D=100-24$

$D=76$

Therefore, the correct option is A.