Question

simplify (1/√2)^3-2(1/√2)^3+7(1/√2)

Answer 1

-1(1/√2)^3+7(1/√2)

You have to remember to add,subtract,multiply, or divide the like terms (e.g. 1 and 2, 56 and 72, 1^3 and 19^3) when you're dealing with algebra, this should make the equation a lot simpler to deal with.