find the arithmetic progression whith given $$a_2a_5=27, S_{10}=121$$ My attemp is:
$$(a_1+d)(a_1+4d)=27$$
$$5(2a_1+9d)=121\rightarrow a_1=\frac{121-45d}{10}$$ Now we have the quadratic equation $$175d^2-4840d+11941=0$$
but i didnt know that is correct. please help me