If a negative sign or a subtraction symbol appears outside parentheses, remove the parentheses and change the sign of every term within the parentheses
x2−3x−2x+6
Subtract the terms
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Evaluate
−3x−2x
Collect like terms by calculating the sum or difference of their coefficients
(−3−2)x
Subtract the numbers
−5x
x2−5x+6
x2−5x+6=6
Move the expression to the left side
x2−5x=0
Factor the expression
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Evaluate
x2−5x
Rewrite the expression
x×x−x×5
Factor out x from the expression
x(x−5)
x(x−5)=0
When the product of factors equals 0,at least one factor is 0
x−5=0x=0
Solve the equation for x
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Evaluate
x−5=0
Move the constant to the right-hand side and change its sign
x=0+5
Removing 0 doesn't change the value,so remove it from the expression