Math, asked by Tanu961, 9 months ago

If p , q are zeroes of polynomial 2x^2 - x - 3 then form a polynomial whose zeroes are 2p and 2q.​

Answers

Answered by lovesambhavjain
1

Answer:

x²-x-6

Step-by-step explanation:

Let zeroes be p and q

2 {x}^{2}  - x - 3  = 0\\ 2 {x}^{2}   + 2x - 3x - 3  = 0\\ 2x(x + 1) - 3(x + 1) = 0

(2x - 3)(x + 1) = 0 \\ 2x - 3 = 0 \:  \:  \:  \:  \:  \:  \:  \:  \:  \: x + 1 = 0 \\ x =  \frac{3}{2}  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  x =  - 1 \\ p =  \frac{3}{2}  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  q =  - 1

p'=2p. q'=2q

2p =  \frac{2 \times 3}{2}  \:  \:  \:  \:  \:  \:  \:  \:  \:  \:  \: 2q =  - 1 \times 2

p'=3. q=-2

p(x)=x²-(p'+q')x+p'.q'

p(x)=x²-(3-2)x+(3)(-2)

p(x)=x²-x-6

Hope it helps

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