Question

1) 5∙5∙5∙5=45; 2) (-3)2=-33=-9;3) 71=1;4) 00=1;5) 2327=221;6) 2327=410;7) 23+27=210; 8) 230:210=23;9) (2х3)=2х3; 10) (х3)2=х9;11) (х2)3(х4)2=(х6)5=х30​

Answer 1

Ответ:

Ошибка здесь:

а) 5*5*5*5=625

б) равенство является ложным.

в) равенство является ложным.

г) 23+27=50

д) выражение истинное. (правильное)

Answer 2

Let's go through each statement one by one:

1. 5∙5∙5∙5 = 45: This statement is incorrect. The product of four fives (5∙5∙5∙5) is equal to 625, not 45.

2. (-3)2 = -33 = -9: This statement is incorrect. Squaring -3 (-3)2 gives a positive result, which is 9. It is not equal to -33 or -9.

3. 71 = 1: This statement is incorrect. 71 is not equal to 1.

4. 00 = 1: This statement is incorrect. 00 represents zero, and zero is not equal to 1.

5. 2327 = 221: This statement is incorrect. The number 2327 is not equal to 221.

6. 2327 = 410: This statement is incorrect. The number 2327 is not equal to 410.

7. 23 + 27 = 210: This statement is incorrect. The sum of 23 and 27 is equal to 50, not 210.

8. 230 ÷ 210 = 23: This statement is incorrect. The division of 230 by 210 is approximately equal to 1.095, not 23.

9. (2х3) = 2х3: This statement is correct. The multiplication of 2 and 3 is equal to 6, and both sides of the equation are equal.

10. (х3)2 = х9: This statement is incorrect. The square of a number multiplied by 3 is not equal to multiplying the number by 9.

11. (х2)3(х4)2 = (х6)5 = х30: This statement is incorrect. The expression (х2)3(х4)2 is not equal to (х6)5. The value of (х2)3(х4)2 is equal to (х8)3, and it cannot be simplified to (х6)5 or х30.

Therefore, out of the given statements, only statement 9 is correct.