Hi i really need on this i will give 60 points may you !

Try this explanation:

1. if to simplify the equation into the form ax²+bx+c=0 then to calculate 'D' ⇒ x²-8x-20=0; D=16+20=36. The value of D is greater 0, it means the given equation has two solutions.

2. Wrong step and correct way are shown in the picture in the attachment.

3. Description of the solution: the points with x=1;3 are the intersection points of the function y=x²-4x+3 and Ox-axis.

PS. all the details are in the attachment.

1. sometimes

2. never true

3. sometimes

step-by-step explanation:

these are pretty self explanatory if you know what supp right and com angles are

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step-by-step explanation: