Question

Find the error in the student's calculation. 2 cubed (2 minus 4) + 5 (3 minus 8). 2 cubed (negative 2) + 5 (5). 8 (negative 2) + 25. Negative 16 + 25. 9.

Answer 1

The answer is B

Explanation:

Answer 2

Kindly check explanation

Explanation:

Given the question:

Find the error in the student's calculation. 2 cubed (2 minus 4) + 5 (3 minus 8). 2 cubed (negative 2) + 5 (5). 8 (negative 2) + 25. Negative 16 + 25. 9.

The student's error occurred here :

2 cubed (negative 2) + 5 (5)

(3 - 8) will give - 5 and not 5 as Witten by the student. The correct working is stated below :

2³(2 - 4) + 5(3 - 8)

Step 1:

8(-2) + 5(-5)

Step 2:

-16 + - 25

Step 3:

-41