-64+k^2=0 solve this using quadratic formula​

x= +8 or -8

Step-by-step explanation:

x=  -b± /2a

x=−0± /√2(1)

x=−0±0/√2

x=−0±256−−−√2

x=−0±162

x=16/2 x=−16/2

x=8

x=−8

b is the answer that makes most sense

step-by-step explanation:

the 2 figures are congruent bc if you reflect abcd over the y axis then over the d axis the figures overlap