22 December, 08:01
What expressions are equivalent to z + (z+6)
1) (z + z) + (z + 6)
2) (z + 6) + 6
3) 2 (z + 30
22 December, 08:10
It would be the number 1 because this is using distributive property. You're adding the z to both z and 6 separately.
It wouldn't be number 2 because there's only one 6. You don't know the values of the z so you can't put another 6. It wouldn't be number 3 because the 30 comes out of nowhere. There's only one known value in the equation.
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» What expressions are equivalent to z + (z+6) 1) (z + z) + (z + 6) 2) (z + 6) + 6 3) 2 (z + 30