If a and b are the zeroes of polynomial 3x2-5x-9, find value of 2/a + 2/b.
Answers
Answered by
1
Answer:
P(x) = 3x^2 -5x -9
The sum of its zeroes £ + B = -b/a, where a & b are the coefficients of x^2 & x respectively, in the polynomial
=> £ + B = 5/3
=> 2£ + 2B = 10/3
Answered by
1
Answer:
-10/9
Step-by-step explanation:
a+b= -b/a = -(-5/3)=5/3
ab= c/a = -9/3= -3
ATP
2(1/a+1/b)
2(b+a/ab)
2(5/3) ÷ -3
-10/9 -- ans
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