QP is the bisector so QPM is half NPM or

54 boo . Divide 189 by 7 then multiply by 2 which is 54
Divide both sides by 2
a-c=2a
minus a fromboth sides
-c=a
Answer:
-15
Step-by-step explanation:
x2 – 2(x - y) – 23
if x = -3, y = 4 and z = -1
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-3 x 2- (-3 - 4) - 23
-15