It is not a right triangle because 21^2+28^2 is not equal to 36^2
[a^2+b^2 must equal c^2)
]
Answer:
(-5, -8)
Step-by-step explanation:









The answer is -10/3 your answer
I’m not rlly sure if i did it right & i’m sorry if i didn’t. i used the FOIL method
f= first to first
o=outer to outer
i=inner to inner
l= last to last
so it’d be
8b + 6b = 14b (f)
8b+ 8=16b(o)
-7+6b=-1b(i)
-7+8(l)
and then you add like terms so
[14b+16b-1b]+1
= 29b+1