Question

13x²-22x+9 by completing square method

Answer 1

Answer:

x=1

Step-by-step explanation:

13x*2-13x-9x+9

13x(x-1)-9()x-1)

(13x-9) (x-1)

x=9/13. & x=1

Answer 2

Answer:

(x+11/13)^2-4/169

Step-by-step explanation:

First,divide everything by 13

x^2-22x/13+9/13

Now take 22x/13 and divide it by 2

11x/13

Now square it

121/169

Therefore,

x^2-22x/13+121/169+9/13-121/169

(x+11/13)^2+117/169-121/169

(x+11/13)^2-4/169(This is vertex form)

x=1 or x=-9/13

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