Doing homework can help improve grades.
This means that this alternative statement is false, and thus we can conclude that the original statement is true. The statement we are trying to prove must have only two possible
Doing homework can help improve grades.
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contradiction. 2 (x+3) - 4x + 7. expression. 2 (x+3) - 4x + 7 = -1. equation. No Equal Sign. expression. Equal Sign. equation.
Now that we have an equation to work with, let’s begin to derive a contradiction: √2 = p / q [our assumption] (√2)2 = (p / q)2 [square both sides of the equation] 2 = p2 / q2 2q2 = p2 [multiply