Question

Solve using quadratic formula​

Answer 1

Step-by-step explanation:

a =3/4

b = -1

c = -1

quadratic formula = - b^2 +or -root of 4ac/2a

1 + or- root of 4 x -3/4 × -1 / -2

step 2

1+3/2 and 1-3/2

ans 4/2and 2/2

2 and 1 is the value

Answer 2

Solution :-

The given equation,

• 3/4 x² - x - 1 = 0

So we would be taking it's L.C.M.,

• 3x² - 4x - 4 / 4 = 0
• 3x² - 4x - 4

★ Quadratic formula :-

• x = - b ± √b² - 4ac / 2a

We have :

• a = 3
• b = -4
• c = -4

Substituting the values :

• x = - (-4) ± √ (-4)² - 4(3)(-4) / 2(3)
• x = 4 ± √(-4 × -4) - 4 × 3 × -4 / 2 × 3
• x = 4 ± √ (16 - 12 × -4) / 2 × 3
• x = 4 ± √ (16 + 48) / 2 × 3
• x = 4 ± √ (64) / 6
• x = 4 ± 8 / 6

Now, here we would be getting two values of x that are as follows -

• x = 4 + 8 / 6 and x = 4 - 8 / 6
• x = 12 / 6 and x = -4 / 6
• x = 2 and x = -2 / 3