Let's simplify the given expression step by step:
Distribute the 4b to both terms inside the parentheses:4b(5a) - 4b(b) - (5a-2)(5a+2)
Simplify the expression:20ab - 4b^2 - (25a^2 - 10a + 25a - 4)
Combine like terms inside the second set of parentheses:20ab - 4b^2 - (25a^2 + 15a - 4)
Distribute the negative sign to all terms inside the parentheses:20ab - 4b^2 - 25a^2 - 15a + 4
Therefore, the simplified expression is:25a^2 - 15a - 4b^2 + 20ab
Let's simplify the given expression step by step:
Distribute the 4b to both terms inside the parentheses:
4b(5a) - 4b(b) - (5a-2)(5a+2)
Simplify the expression:
20ab - 4b^2 - (25a^2 - 10a + 25a - 4)
Combine like terms inside the second set of parentheses:
20ab - 4b^2 - (25a^2 + 15a - 4)
Distribute the negative sign to all terms inside the parentheses:
20ab - 4b^2 - 25a^2 - 15a + 4
Therefore, the simplified expression is:
25a^2 - 15a - 4b^2 + 20ab