Apply Distributive Property: Apply the distributive property (also known as the FOIL method) to multiply the two binomials (x+8) and (x−9).(x+8)(x−9)=x(x−9)+8(x−9)
Multiply x Terms: Multiply x by each term in the binomial (x−9).x(x−9)=x×x−x×9=x2−9x
Multiply 8 Terms: Multiply 8 by each term in the binomial (x−9). 8(x−9)=8×x−8×9=8x−72
Combine Results: Combine the results from Step 2 and Step 3 to get the trinomial.(x2−9x)+(8x−72)=x2−9x+8x−72
Combine Like Terms: Combine like terms by adding the coefficients of x.x2−9x+8x−72=x2−(9x−8x)−72=x2−1x−72