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10 cards from this deck
2
Factorise, set factors to 0, solve linear equations
Factorise the left-hand side
Set each factor equal to zero
Solve the linear equations
At least one bracket must equal zero
(x+a)(x−a)(x + a)(x - a)(x+a)(x−a)
Factor out xxx: x(x−10)=0x(x - 10) = 0x(x−10)=0
Substitute back, should equal zero
x=[number]x = \text{[number]}x=[number]
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