Practice Set 2.4
Compare the given quadratic equations to the general form and write values of a, b, c.…
x^2 + 6x + 5 = 0 Solve using formula.
x^2 - 3x - 2 = 0 Solve using formula.
3m^2 + 2m - 7 = 0 Solve using formula.
5m^2 - 4m - 2 = 0 Solve using formula.
y^2 + 1/3 y = 2 Solve using formula.
5x^2 + 13x + 8 = 0 Solve using formula.
With the help of the flow chart given below solve the equation x^2 + 2 root 3x+3 = 0…
Practice Set 2.4
Question 1.
Compare the given quadratic equations to the general form and write values of a, b, c.
(1) x2 – 7x + 5 = 0
(2) 2m2 = 5m – 5
(3) y2 = 7y
Answer:
(1) 
a = 1, b = -7, c = 5
(2) 
a = 2, b = -5, c = 5
(3) 
a = 1, b = -7, c = 0
Question 2.
Solve using formula.
x2 + 6x + 5 = 0
Answer:
⇒ 
⇒ 
⇒ 
⇒ 
⇒ 
Question 3.
Solve using formula.
x2 – 3x – 2 = 0
Answer:
⇒ 
⇒ 
⇒ 
⇒ 
Question 4.
Solve using formula.
3m2 + 2m – 7 = 0
Answer:
⇒ 
⇒ 
⇒ 
⇒ 
Question 5.
Solve using formula.
5m2 – 4m – 2 = 0
Answer:
⇒ 
⇒ 
⇒ 
⇒ 
Question 6.
Solve using formula.
Answer:
⇒ 
⇒ 
Y 
⇒ 
⇒ 
Question 7.
Solve using formula.
5x2 + 13x + 8 = 0
Answer:
⇒ 
⇒ 
⇒ 
⇒ 
Question 8.
With the help of the flow chart given below solve the equation 
using the formula.
Answer:
⇒ 
⇒ 
⇒ 
