Question

find the product and verify the result fo a=3, b=5 (a^2+ab)(a^2-ab)

Answer 1

Answer:

-144

Step-by-step explanation:

(a^2+ab)(a^2-ab)

[(a+b) (a-b) ]=a^2-b^2

(a^2)^2-(ab)^2

a^4-(ab)^2

[a=3;b=5) ]

[(3)^4] - [(3)(5)]^2

3×3×3×3 - (15)^2

81-225

-144

Answer 2

Step-by-step explanation:

(a^2+ab)(a^2-ab)

a^2(a^2-ab)+ab(a^2-ab)

a^4-a^3b+a^3b-a^2b^2

a^4-a^2b^2

verification:

3^4-3^2(5^2)

81-9(25)

81-225= -144