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Can -x^2 - 5x + 4 be written as x^2 + 5x - 4?
10 years ago

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Reiny
nope, what you wrote is the opposite of what you had

That is like saying can 5 be written as -5 ?
10 years ago
Steve
however, if you are solving an equation, such as

-x^2 - 5x + 4 = 0

you can multiply both sides by -1 to get rid of the leading minus sign:

x^2 + 5x - 4 = 0

since -0 = 0.
10 years ago

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