Muitply by two on both sides then subtract then divide to find x
Answer:

Step-by-step explanation:
Let the number be x;
The product of 4 and the number will be;

The the square of the number is given as;

Taking the difference of both expressions above;

Factor out the common term:

Hence the difference between the product of 4 and a number and the square of the number is 
Answer:
160
Step-by-step explanation:
6.4 = 0.04x
6.4 / .04 = 160
Answer:
we conclude that in the second step, 3 should have been subtracted from the right side as well on the left side.
Step-by-step explanation:
Given the expression

SECOND STEP
subtract 3 from the right-hand side as well as on the left-hand side

SOLVING THE REMAINING COMPLETE COMPRESSION

Divide all parts by -2
- Please note that multiply or divide an inequality by a negative number flips the inequality sign.
so the expression becomes


Hence, from the explanation, we conclude that in the second step, 3 should have been subtracted from the right side as well on the left side.