Question

find the zeroes of the following quadratic polynomials and verify the telationship between the zeroes and the coefficients (i) x2 -2x-8​

Answer 1

Answer:

-72=-72

Step-by-step explanation:

GIVEN:

X^2 -X-72.

TO FIND:

ZEROES OF THIS QUADRATIC POLYNOMIAL.

METHOD:

MIDDLE TERM FACTORISATION.

SOLUTION:

NOW THE ZEROES ARE:

X-9=0=>X=9

OR,

X+8=0=>X=-8

VERIFICATION OF RELATIONSHIPS:

SUM OF ZEROES = COEFFICIENT OF X/COEFFICIENT OF X^2

=>-8+9=-1/1

=-1=-1 (VERIFIED)

PRODUCT OF ZEROES = CONSTANT TERM/COEFFICIENT OF X^2

=>-8×9=-72/1

= -72=-72