Question

If the Sum of the zeroes of
$7 {x}^{2} - px+ 1$
is 9 then find p​

Answer 1

Answer:

p = 63

Step-by-step explanation:

Sum of zeros = - b/a

b = -p

a = 7

$\frac{ - ( - p)}{7} = 9 \\ p \: = 63$

Answer 2

GIVEN :

Quadratic Equation = 7x² - px + 1

Sum of zeroes = 9

We know that,

Sum of zeroes using coefficients = -b/a

=> -b/a = 9

=> -(-p)/7 = 9

=> p = 9 × 7

=> p = 63

=> p = 63

Therefore, the sum value of p is 63.