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McGraw Hill Glencoe Algebra 2, 2012 View details

1. Expressions and Formulas

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Exercise 3 Page 7

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

18.4

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.

a+3[b^2-(a+c)]

SubstituteValues

Substitute values

-2+3[ 3^2 -( -2+ 4.2)]

AddTerms

Add terms

-2+3[3^2 -2.2]

CalcPow

Calculate power

-2+3[9 -2.2]

SubTerm

Subtract term