Factorise fully 2rs - 4t - 6t + 3s
2 answers:
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Answer: ;
Step-by-step explanation:
I have never done a problem like this, so this is my first time attempting it.
The standard form for the equation of a circle is:
Begin by grouping the 'x' terms and 'y' terms:
Complete the square for the second polynomial:
Do the exact same process with the other polynomial:
Complete the square:
Bring the 121 to the other side to get:
The above expression is the equation of our circle in standard form. It is centered at the coordinates (7, -2) and has a radius of 11 units. The area of a circle if given by:
