Question

(2*3^20-5*3^19)÷(-9)^9

Answer 1

Ответ: 1) (-9)^9=-(9^9)=-(3^18)

2) (2*3^20-5*3^19)÷(-9)^9=2*(3^(20-18))-5*(3^(19-18))=2*9-5*3=18-15=3.

Объяснение:

Answer 2

Let's simplify the expression step by step:

Step 1: Calculate the powers of 3 in the expression. 2 * 3^20 = 2 * 3,486,784 = 6,973,568 5 * 3^19 = 5 * 116,226 = 581,130

Step 2: Subtract the second term from the first term. 6,973,568 - 581,130 = 6,392,438

Step 3: Evaluate the denominator. (-9)^9 = -387,420,489 (since -9 raised to an odd power is negative)

Step 4: Divide the result from Step 2 by the denominator. 6,392,438 / -387,420,489 ≈ -0.0164818

So, (23^20-53^19)÷(-9)^9 is approximately equal to -0.0164818.