4+m
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A + B = B + A (commutative property)
fcbgf
Beacause with a formula you are finding out a problem. Just like evaluating means to find out or to solve.
With great difficulty because it is not a quadratic equation or even a quadratic expression.
You can:* Add the same expression to both sides of an equation * Subtract the same expression from both sides * Multiply the same expression (must not be zero) to both sides * Divide both sides by the same expression (must not be zero)