(x+9) (x-9) Step-by-step explanation: This expression is in the form a2 − b2, so use the difference of squares rule to factor the expression: x^2-81=x^2-9 THIS IS the RIGHT ANSWER AND I PROOF.

Although changes result from business transactions, the equality of the fundamental bookkeeping equation must remain. t/f

The polynomial 10x3 + 35x2 - 4x - 14 is factored by grouping. 10x3 + 35x2 - 4x - 14 5x )-20 what is the common factor that is missing from both sets of parentheses?

Abicycle training wheel has a radius of 3 inches. the bicycle wheel has a radius of 10 inches.approximately how much smaller, in square inches and rounded to the nearest hundredth, is the area of the training wheel than the area of the regular wheel? *