Factoring polynomials f (x) = x^4-18x^2+81

72% of 25 students are not good in maths. How many are not good in maths?

During a game, players can win and lose counters. At the start of the game Rob, Tim and Zak share the counters in the ratio 5 : 6 : 7 At the end of the game Rob, Tim and Zak share the same number of counters in the ratio 7 : 9 : 8 Show that Rob ends

5 quarters and 7 pennies what fraction of the coins are pennies?

If $3 million is invested at 6% interest compounded continuously how much will the investment be worth in 35 years

six more than the product fof four times the differences between x and 3. What is the value of the expression when x=8?

A science fair poster is a rectangle 48 inches long 24 inches wide What is the area of the poster in square feet?

If the diagonals of a kite are 10cm and 24cm, find its area.

A compound inequality is graphed and its graph consists of real numbers which open sentence could have resulted in this solution set r > 3 or r < - 2 r <3 or r 3 or r> - 2 r - 2

Simplify 7/3+3 (2/3-1/3) squared

Which expression is equivalent to 2x^2-72