Given the function f(x) = 3x2 − 4, what is f(-2)?

How do i make someone brainliest? (if you answer me, i might be able to make you brainliest! )

Which of the following pair(s) of circles have las a common external tangent? select all that apply. a and b a and c b and c

In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ah=4 and hc=1, find bh.