Question

15. (i) Let's write for which value of t, x2-tx+1÷4will be a whole square form.
(ii) Let's write the expression which when added to a2+ 4 gives a whole square.
(iii) If a and b are positive integers and a2-b2 =9x11, let's write one of the values of each a & b
(iv) (x+y)2-(x-y)2 = 4xy an identity or an equation? Write with reason.
(v) For each positive or negative value of x and y except zero the value of x2+y2 is always (positive or negative)​

Answer 1

Answer:

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Answer 2

Answer:

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