JAMIA 2026 — Mathematics PYQ
JAMIA | Mathematics | 2026If α and β are the roots of 3x2+9x=12, then the value of (αβ) is
Choose the correct answer:
- A.
3
- B.
-3
- C.
4
- D.
-4
(Correct Answer)
-4
Explanation
Step 1: Write the given equation in standard form (ax2+bx+c=0)
The provided equation is:
3x2+9x=12
Bring 12 to the left side to set the right side to zero:
3x2+9x−12=0
Step 2: Identify the coefficients
By comparing our equation with the general quadratic standard form ax2+bx+c=0, we extract:
a=3
b=9
c=−12
Step 3: Calculate the product of the roots (αβ)
Using the formula for the product of roots:
αβ=ac
Substitute the values of c and a:
αβ=3−12
αβ=−4
Correct Answer
The correct option is (d) −4.
Explanation
Step 1: Write the given equation in standard form (ax2+bx+c=0)
The provided equation is:
3x2+9x=12
Bring 12 to the left side to set the right side to zero:
3x2+9x−12=0
Step 2: Identify the coefficients
By comparing our equation with the general quadratic standard form ax2+bx+c=0, we extract:
a=3
b=9
c=−12
Step 3: Calculate the product of the roots (αβ)
Using the formula for the product of roots:
αβ=ac
Substitute the values of c and a:
αβ=3−12
αβ=−4
Correct Answer
The correct option is (d) −4.
