Math, asked by deepshilasanu2207, 8 months ago

Sum of zeroes of the polynomial 2xsquare +5x +7 is

Answers

Answered by varshithav388
3

Answer:

given 2x²+5x+7

let p(x)=0

2x²+5x+7=0

2x²+7x-2x+7=0

x(2x+7)-1(2x+7)=0

(x-1)(2x+7)=0

x=1or-7/2

Answered by yogeshkumar49685
1

Concept:

The quadratic equation is the polynomial equation with the highest degree 2 of a variable in that algebraic expression.

The quadratic equation is generally represented as,

ax^{2}+bx+c=0

here,

a and b are coefficients of this quadratic expression.

c is constant and x is the variable of this expression.

Sum of the zeros of the quadratic expression is =\frac{-b}{a}

Product of the zeros of the quadratic expression is =\frac{c}{a}

Given:

Quadratic expression: 2x^{2} +5x+7

Find

The sum of zeros of this quadratic expression.

Solution

Quadratic expression: 2x^{2} +5x+7

a = 2

b = 5

c = 7

Sum of the zeros of the quadratic expression is =\frac{-b}{a}

                                                                                =\frac{-5}{2}

Hence, the sum of the zeros of the given quadratic expression is \frac{-5}{2}

Similar questions