Algebra

I need some help figuring these.

Compute each product and simplify the result. I don't have the squareroot sign so put that meaning that's where it goes with the number after it.

1. (0.3 Squareroot of 5)^2
2. (2+ squareroot of 5)^2

3. (5+4Squareroot of 10)(1-2 squareroot of 10)

4. (3 squareroot 5 + 4 squareroot 2)(squareroot 15+ squareroot 6)

asked by Becca
  1. 1. 0.45
    2. 4sqt5 +9
    3. -6sqt10 -75
    4. 13sqt3 + 7sqt30

    posted by gabriel
  2. not sure though..
    because sometimes i'm making mistakes in radicals...

    posted by gabriel

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