1.The term 215th of the expression A=1-7+13-19+25-31+⋯ is...
2.The number of values of n such that n2+34 which is a square number is...
3.Given a division If dividend and divisor are increased to 90 and 6 units respectively,then the quotient and the remainder are not changed the quotient is...
Giúp mình với
Nhớ giải cụ thể giùm mình nha! Cám ơn!
cau 2 la n=1 chu cau 1 voi 3 minh ko biet