Question

If the cost of one pen is (a² + 10a + 25) then find the total cost of (a+5) numbers of such pens?

Answer 1

Answer:

(a+5) ^3

Step-by-step explanation:

(a+5)^2=(a^2+10a+25)

so one pen cost (a+5)^2

then (a+5) pens cost is (a+5)*(a+10a+25)

which is (a+5)^3