Question 178651: Evaluate each polynomial expression for the indicated value of x.
****The most important thing to remember when evaluating expressions given a specific value is to use parentheses....see below... and PEMDAS: you simplify math expressions in the following order: parentheses first, exponents next; multiplication and division (do in order from left to right); and add/subtract (do in order from left to right)
7x^2-19x, x=5
-x^4+3x^3-2x^2+4, x=-1
0.5x^3-0.6x^2-3x, x=10
Answer by eperette(173)   (Show Source):
You can put this solution on YOUR website! ****The most important thing to remember when evaluating expressions given a specific value is to use parentheses....see below... and PEMDAS: you simplify math expressions in the following order: parentheses first, exponents next; multiplication and division (do in order from left to right); and add/subtract (do in order from left to right)
7x^2-19x, x=5
7(5)^2-19(5)
7(25)-19(5)
175-95
80
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-x^4+3x^3-2x^2+4, x=-1
-(-1)^4 + 3(-1)^3 - 2(-1)^2 +4
-(1) +3(-1) -2(1) +4
-1 - 3 - 2 +4
-4 -2 + 4
-6 + 4
-2
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0.5x^3-0.6x^2-3x, x=10
0.5(10)^3 - 0.6 (10)^2 -3(10)
0.5(1000) - 0.6(100) - 30
500 - 60 - 30
440 - 30
410
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