Question

domain of √ x^2+8x+15​

Answer 1

f(x)=x2-8x+15

a=1,b=-8,c=15

a(x+d)2 +e

d=-4

e=c-b2 by 4a

e=15-16

e=-1

substitute the value of a,d and e into the

a(x+d)2+e

(x-4)2 -1

y=a(x-h)2+k,to

a=1,h=4,k=-1

(4,-1)

y=-1