Question

find the sum of the zero of the product of the zero of the quadratic polynomial 2 x square - 10x + 12​

Answer 1

= 2x² - 10x + 2

• a = 2
• b = -10
• c = 2

Sum of zeroes = -b/a

= -(-10)/2

= 10/2

= 5

Product of zeroes = c/a

= 12/2

= 6

Answer 2

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FORMULA TO BE IMPLEMENTED

If $\alpha \: \: and \: \: \beta \:$are the zeroes of the quadratic polynomial $a {x}^{2} + bx + c$

Then

$\displaystyle \: \alpha + \beta \: = - \frac{b}{a} \: \: and \: \: \: \alpha \beta \: = \frac{c}{a}$

TO DETERMINE

The sum of the Zeroes and the product of the zeroes of the quadratic polynomial

$2 {x}^{2} - 10x + 12$

CALCULATION

The given Quadratic polynomial is

$2 {x}^{2} - 10x + 12$

Comparing with

$a {x}^{2} + bx + c$

We get

$a = 2 \: , \: b = - 10 \: , \: c = 12$

So

$\sf{Sum \: of \: the \: Zeroes \: } = \displaystyle \: - \frac{b}{a} = - ( - \frac{10}{2} ) = 5$

$\sf{Product \: of \: the \: Zeroes \: } = \displaystyle \: \frac{c}{a} = \frac{12}{2} = 6$