We provide tutoring on SAT quantitative test and other specific exams or topics where assistance is needed as the student prepares for the university math entrance exam.

Example

Find the coefficient of x in the expression(1+x)0+(1+x)1+(1+x)2++(1+x)10

Solution:

0+1+2+3+\cdots 10 = (1+10)\frac{10}{2} = 55