Exercise 26 Page 239

Substitute -6 for a in the expression. When multiplying real numbers, the product will be positive if the signs are the same and it will be negative if the signs are different.

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Practice makes perfect

To evaluate the given expression for a=-6, first, we should substitute -6 for a in the given expression.

Substitute

a= -6

2( -6)

When multiplying real numbers, the product will be positive if the signs are the same and it will be negative if the signs are different. cc Same Sign & Different Signs (+)(+)=(+) & (+)(-)=(-) (-)(-)=(+) & (-)(+)=(-) In our case one number is negative and one is positive, so the product will be negative.

2(-6)

MultNegPos

(- a)b = - ab

-2* 6

Multiply

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Subchapter links

Guided Practice p.236

Independent Practice p.237-238

H.O.T. Problems p.238

Standardized Test Practice p.238-240

Extra Practice p.239

Common Core Review p.240

Exercise 26 Page 239

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