Question

F(x)=4x^2-5x-1 find the value of 1/alpha+1/beta -2 alpha beta

Answer 1

Answer:

-9/2

For explaination , please refer to the attachment .

Note:

★ The possible values of the variable for which the polynomial becomes zero are called its zeros .

★ A quadratic polynomial can have atmost two zeros .

★ If α and ß are the zeros of the quadratic polynomial ax² + bx + c , then ;

• Sum of zeros , (α + ß) = -b/a

• Product of zeros , (αß) = c/a