Which expression is equivalent to this expression? the sum from n is equal to 1 to 50 of open paren n close paren
Answer
A
4 times open paren the fraction with numerator 50 open paren 50 plus 1 close paren open paren 2 times 50 plus 1 close paren and denominator 6 close paren plus 3 times 50
B
4 times open bracket the fraction with numerator 50 times open paren 50 plus 1 close paren and denominator 2 close bracket squared plus 3 times open paren the fraction with numerator 50 times 51 and denominator 2 close paren
C
4 times open paren the fraction with numerator 50 open paren 50 plus 1 close paren open paren 2 times 50 plus 1 close paren and denominator 6 close paren plus 3 times open paren the fraction with numerator 50 times 51 and denominator 2 close paren
D
4 times open bracket the fraction with numerator 50 times open paren 50 plus 1 close paren and denominator 2 close bracket squared plus 3 times 50