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Q: Use the product of a sum and a difference to evaluate the expression 31 times 29?

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The answer to the product of a and b divided by an expression that is 3 times their difference is 3ab(a+b).

It means: 1/10 times 3.7 = 0.37

Multiplicand times multiplier equals product. If the expression has a variable, the numerical factor of the variable is the coefficient.

If x is 4 then 34.5x evaluates to 34.5 times 4 = 138

2(-6n)

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The answer to the product of a and b divided by an expression that is 3 times their difference is 3ab(a+b).

It is simply: 9c which means 9 times c

It means: 1/10 times 3.7 = 0.37

Multiplicand times multiplier equals product. If the expression has a variable, the numerical factor of the variable is the coefficient.

If x is 4 then 34.5x evaluates to 34.5 times 4 = 138

It would be: 3(7-d) as an algebraic expression

Multiplicand times multiplier equals product. If the expression includes a variable, the numerical factor is the coefficient.

2(-6n)

8(5x) = 40x

0.8 x 12 = 9.6

There is no variable in (8x12)+8, so it would be called an arithmetic expression. It would evaluate to 96+8 = 104.

|5n - 2n|

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