Hey i need help figuring out x^2-8x +7 =0

x=7, x=1

Step-by-step explanation:

when you factor then u just equal the two parenthesis to zero.

when your at:

(x-7)(x-1)

x-7=0

+7=+7

x=7

x-1=0

+1=+1

x=1

d. bc = 12 and ef = 16

step-by-step explanation:

we are given that δabc : δdef such that .

also, it is given that

so, from the options, we need that .

a.

b.

c.  

d.

as, we can see that only option d gives the same ratio as i.e. .

hence, the possible lengths are bc = 12 and ef = 16.