Question

if L and ß are zeroes of quadratic polynomial
$x2 - 6x + a$
find the value of
$3l + 2b = 20$
​

Answer 1

Polynomial   P(x) = x² - 6 x + a

Given  α and  β  are the roots.     To find a , if 3 α + 2 β = 20.  ---(1)

From the quadratic expression:

    α + β = 6       ---(2)

    and   α β = a  --- (3)

Multiply equation (2) by 2 and subtract from (1) to get:

    α = 20 -12 = 8

Substitute this value in(2) to get:    

     β = 6-8 = -2   

Substitute these in (3) to get:    a = α β = -16.

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Answer 2

Answer:

7,303,206. Expanded form = 7 × 1000000 + 3 × 100000 + 0 × 10000 + 3 × 1000 + 2 × 100 + 0 ... (ii) 4035672 ... (ii) One million, forty-seven thousand, five hundred and nine ·