book Maths Puzzle Numerical Ability

can anyone answer this question?
Find the coordinates of the image of a segment whose endpoints are D(-2,3)and K(1,2)after each transformation.
1. a translation of right 4 and do

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book Other Question

Prove that the square of an odd integer is always of the form 8k+1, where k is an integer.

Last one: Prove that n^2-5n^3 + 4n is divisible by 120 for all positive integers n is Here I need to factor the quadratic expression completely, and find the roots of the expression.

135x^2 - 222x + 91