Question

write dicrminant of
$(x + 5) { }^{2} = 2(5x - 3)$
​

Answer 1

Answer :

Discreminant (D)=-124

Explanation:

(x+5)² = 2(5x-3)

=> x²+2*x*5+5²=10x-6

=> x²+10x+25-10x+6=0

=> x²+31=0

Compare x²+0+31=0 with

ax²+bx+c=0, we get

a=1 , b = 0 , c = 31

discreminant (D)=b²-4ac

= 0² - 4×1×31

= -124

Therefore,

D = -124