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# Tutor profile: Anthony R.

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Anthony R.
Have been tutoring for 10 years with overwhelming success.
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## Questions

### Subject:SAT

TutorMe
Question:

In the complex number system, what is the value of the product (4 -2i)(4 -2i)?

Inactive
Anthony R.

(4 -2i)(4 -2i) 4^2-〖(2i)〗^2 difference of two squares 16 -4i^2 16 – 4(-1) i^2= -1 16 + 4 20

### Subject:Physics

TutorMe
Question:

Given two forces of 5N and 3N respectively, what is the smallest resultant possible?

Inactive
Anthony R.

The smallest possible resultant of the two stated vectors will occur when both vectors are anti-parallel to each other. The resultant will the be (5N - 3N) = 2N

### Subject:Algebra

TutorMe
Question:

John is x yrs old and his sister Jane is (x-5) yrs old, if the product of their ages is 6 yrs how old is John?

Inactive
Anthony R.

x(x-5)=6 x^2-5x=6 x^2-5x-6=0 (x-6)(x+1)=0 Either (x-6)=0 or (x+1)=0 Hence, x=6 or x=-1 Since x represents years it therefore has to be positive and hence x=6

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