What is the next number in this sequence? 10, 13, 20, 31, 46, ...

Analyse the sequence to find the second order difference.10 13 20 31 46 75 3 7 11 15 19 4 4 4 4

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Y=3x^2-2 ( Make x the ubject of the formula


Where does the quadratic formula come from?


solve; (6x - 2)/2 - (4x+7)/3 = 1-x


Solve algebraically the simultaneous equations x2 +y2 =25 and y – 3x = 13