Step-by-step explanation: Use the form (a + b)(a – b) = a^2 – b^2: (2x^4 + 3x^3)(2x^4 – 3x^3) = 4x^8 – 9x^6. Log in to Reply

Step-by-step explanation:Use the form (a + b)(a – b) = a^2 – b^2:

(2x^4 + 3x^3)(2x^4 – 3x^3) = 4x^8 – 9x^6.