Simplify each expression. Justify each step. 1- (5n×9)×2n 2- 3X×(7×X) 3- (4m×2)×5m 4- (7+47+3)[5×(2×3)]

asked Dec 5, 2017 2.2k views

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Simplify each expression. Justify each step.

1- (5n×9)×2n

2- 3X×(7×X)

3- (4m×2)×5m

4- (7+47+3)[5×(2×3)]

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Solve the equation by completing the square.

x2 + 18x = 5
.
.The solutions are ___ and ___.

Tomer Cagan answered Dec 8, 2017

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