Question

(цифра после скобок степень) (-9)2+(-1)7=

Answer 1

81-1=80(т.к.отрицательное число в квадрате есть число положительное и - 1 в нечетной степени это - 1)

Answer 2

$( { - 9}^{2} ) + ( { - 1}^{7} ) = 81 + ( - 1) = 81 - 1 = 80$

Answer 3

To solve the expression, we need to apply the exponentiation first and then perform the addition. Let's start by calculating the powers:

(-9)^2 = (-9) * (-9) = 81 (-1)^7 = -1 (since an odd power of a negative number remains negative)

Now, let's substitute these values back into the expression and compute the result:

(-9)^2 + (-1)^7 = 81 + (-1) = 81 - 1 = 80

So, the final result is 80.