use the formula
to multiply :((b+2)(b-1)
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8
(x+a)(x-b) = x² + (a-b)x - ab
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0
Step-by-step explanation:
( b+2) (b-1)
formula : (x+a) (x-b )
x²+(a+b)x + a×(-b)
= b²+ 2+(-1)b +2×(-1)
= b² + b - 2
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