What is the product?
(-3s +21)(45-6)
A-1252-222
B-1252 +222
C-1252 +8st – 22
D-12s +11st-212

d. -12s^2+11st-2t^2

i listened to da other person and got it wrong so i actually tried to sovle it myself, and i was right.

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.

x=-7

step-by-step explanation:

x+3=-10

-10+3=-7

x=-7