Every difference of squares problem can be factored as follows: a2 – b2 = (a + b)(a – b) or (a – b)(a + b). So, all you need to do to factor these types of problems is to determine what numbers squares will produce the desired results.
Answer:
The answer is "36".
Step-by-step explanation:
Please find the complete question in the attached file.
Answer: n =
Step-by-step explanation:
We can write that 40% of the full amount is 30 marks.
Using x for the full amount, we can say 0.4x=30.
To solve for x, we devide both sides by 0.4 (or equivalently, multiply by 2.5).
We get x = 75 marks.
Answer:
1st is correct
Step-by-step explanation:
Like charges repel each other.
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