Question
Solve the quadratic equation
Solve by factoring
Solve using the quadratic formula
Solve by completing the square
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x1=−111,x2=101
Alternative Form
x1=−0.0˙9˙,x2=0.1
Evaluate
110(1+x)2−221(1+x)+110=0
Expand the expression
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Evaluate
110(1+x)2−221(1+x)+110
Expand the expression
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Evaluate
110(1+x)2
Expand the expression
110(1+2x+x2)
Apply the distributive property
110×1+110×2x+110x2
Any expression multiplied by 1 remains the same
110+110×2x+110x2
Multiply the numbers
110+220x+110x2
110+220x+110x2−221(1+x)+110
Multiply the terms
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Evaluate
−221(1+x)
Apply the distributive property
−221×1−221x
Any expression multiplied by 1 remains the same
−221−221x
110+220x+110x2−221−221x+110
Calculate the sum or difference
−1+220x+110x2−221x
Subtract the terms
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Evaluate
220x−221x
Collect like terms by calculating the sum or difference of their coefficients
(220−221)x
Subtract the numbers
−x
−1−x+110x2
−1−x+110x2=0
Factor the expression
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Evaluate
−1−x+110x2
Rewrite the expression
−1+(−11+10)x+110x2
Calculate
−1−11x+10x+110x2
Rewrite the expression
−1−11x+10x+10x×11x
Factor out −1 from the expression
−(1+11x)+10x+10x×11x
Factor out 10x from the expression
−(1+11x)+10x(1+11x)
Factor out 1+11x from the expression
(−1+10x)(1+11x)
(−1+10x)(1+11x)=0
When the product of factors equals 0,at least one factor is 0
−1+10x=01+11x=0
Solve the equation for x
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Evaluate
−1+10x=0
Move the constant to the right-hand side and change its sign
10x=0+1
Removing 0 doesn't change the value,so remove it from the expression
10x=1
Divide both sides
1010x=101
Divide the numbers
x=101
x=1011+11x=0
Solve the equation for x
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Evaluate
1+11x=0
Move the constant to the right-hand side and change its sign
11x=0−1
Removing 0 doesn't change the value,so remove it from the expression
11x=−1
Divide both sides
1111x=11−1
Divide the numbers
x=11−1
Use b−a=−ba=−ba to rewrite the fraction
x=−111
x=101x=−111
Solution
x1=−111,x2=101
Alternative Form
x1=−0.0˙9˙,x2=0.1
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