## Algebra: A Combined Approach (4th Edition)

$20x^{2}-x-30$
Step 1: $(4x-5)(5x+6)$ Step 2: We will use the FOIL approach to multiply the two polynomials together. Step 3: $4x(5x)+4x(6)-5(5x)-5(6)$ Step 4: $20x^{2}+24x-25x-30$ Step 5: $20x^{2}-x-30$