Discriminant and nature of the roots 3x2 – 4x – 2 = 0
5x2 – 1 = 0
2x2 – 5x + 4 = 0
pahelp po huhuh

see explanation

Step-by-step explanation:

Given a quadratic equation in standard form

ax² + bx + c = 0 ( a ≠ 0 ) , then the discriminant is

Δ = b² - 4ac

• If b² - 4ac > 0 then roots are real and distinct

• If b² - 4ac = 0 then roots are real and equal

• If b² - 4ac < 0 then roots are not real

3x² - 4x - 2 = 0 ← is in standard form

with a = 3, b = - 4, c = - 2 , thus

b² - 4ac = (- 4)² - (4 × 3 × - 2) = 16 - ( - 24) = 16 + 24 = 40

Since b² - 4ac > 0 then roots are real and distinct

u = -(6/7)w

step-by-step explanation:

place all values with 'u' on one side of the equation.

4u + 8w = - 3u + 2w

4u + 3u = 2w - 8w

further simplify the equation by solving the addition and subtraction.

7u = - 6w

make 'u' the independent variable by placing its co-efficient on the right-hand side.

u = - (6/7)w

try soting them out first

step-by-step explanation: