Three more than a positive number is twenty less than it’s square. What is the number ?

Ateacher has $80 to buy workbooks. each work book cost $3. if she buys as many workbooks as possible, how much money does she have leftover? a) $2 b) $4 c) $6 d) $8

Lola says these two expressions have the same value. expression a expression b which explains whether lola is correct?

Prove that (x-2)is factor of p (x)=2x³-3x²-17x+30