Question

find all the zeroes of qatratic polynomial verify the relationship between zeroes and coefficient 2x²_3+5x​

Answer 1

$2x {}^{2} - 3 + 5x$

$= 2x {}^{2} + 5x - 3$

$= 2x {}^{2} + 6x - x - 3$

$= 2x(x + 3) - 1(x + 3)$

$= (2x - 1)(x + 3)$

$x = 1 \div 2$

$x = - 3$

alpha+beta= 1/2+(-3)

=-5/2

alpha×beta=1/2×(-3)

=-3/2