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Let p and q be different primes greater than 2. Prove that pq can be written as difference of two squares in exactly two different ways.

Without loss of generality claim p > q.Now, we try to write pq in the form pq = a2-b2 where a and b are non-negative integers.If b = 0, then pq = a2. But p and q are di...

TL
Answered by Theodor L. STEP tutor
2132 Views

To what extent was the Civil Rights Movement a success?

In order to answer this question, first of all it is vital to break down what it is actually asking. This essay's main discussion should centre quite clearly around the Civil Rights Movement, however this...

OL
Answered by Orla L. History tutor
2587 Views

How would I answer a question on memory models?

You would choose a specific memory model, for example, the Multi-Store Model of Memory. This was proposed by Atkinson and Shifrin and essentially explains the way in which they believe how memories are pa...

SC
Answered by Seren C. Psychology tutor
1726 Views

Solve the simultaneous equations;5x +y = 21 and x-3y=9

Two ways of doing this, substitution and elimination. Could teach both so students choose which they prefer
Substitution;change the second equation into x=3y+9 then substitute it into the first equat...

KO
Answered by Kameel O. Maths tutor
4623 Views

I am struggling to solve algebra equations. I was given the following equation to solve at school and am unsure how to approach it : 4(x + 3) = 2x + 8

4(x + 3) = 2x + 8The first step in solving this equation is to expand the brackets on the left hand side. A bracket means that the contents of the bracket should be multiplied by whatever is outside of th...

KT
Answered by Katherine T. Maths tutor
2743 Views

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