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McGraw Hill Glencoe Algebra 2, 2012 View details

1. Expressions and Formulas

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Exercise 7 Page 7

Substitute - 2 for a, 3 for b, and 4.2 for c.

0.96875

Practice makes perfect

To evaluate the given expression for a = -2, b = 3, and c= 4.2, we should substitute these values into the expression and simplify as much as possible.

b^3+ac/ab+2bc

SubstituteValues

Substitute values

3^3+( - 2)( 4.2)/-2( 3)+2( 3)( 4.2)

CalcPow

Calculate power

27+(-2)(4.2)/-2(3)+2(3)(4.2)

MultNegPos

(- a)b = - ab

27+(- 8.4)/-6+25.2

AddNeg

a+(- b)=a-b