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What is the value of: -9^7 + 9^9 ?
What is the value of: -9^7 + 9^9 ?
Quiz
(A) 9^2
(B) -18^16
(C) 63(9^7)
(D) -80(9^7)
(E) 80(9^7)
Answer/Solution
80(9^7)
Steps/Work
-9^7 + 9^9 = 9^7 (-1 + 9^2) = 9^7 (-1 + 81) = 80 (9^7), Answer E.