(5sqrt5 - 10sqrt3)(2sqrt5 + 4sqrt3) =
Let a = sqrt5, and b = sqrt3:
(5a - 10b)(2a + 4b).
10a^2 + 20ab - 20ab - 40b^2,
10a^2 - 40b^2,
10(a^2 - 4b^2),
10(a + 2b)(a - 2b),
10(sqrt5 + 2sqrt3)(sqrt5 - 2sqrt3).
Please help:
Multiply and simplify:
(5sqrt:5 - 10sqrt:3)(2sqrt:5 + 4sqrt:3)
1 answer