Question

what must be added to 9x^2-24x+10 to make it a whole square?

Answer 1

If you add 6

9x^2-24x+10 +6

(3x)^2 -2(3)(4)x + (4)^2

using identity : a^2 + b^2 -2ab = (a-b)^2

(3-4)^2(answer in whole squre)