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Nikolay [14]
4 years ago
5

What is the value of the expression? 3.2(2.3)−4.8 Enter your answer in the box as a decimal.

Mathematics
2 answers:
iren2701 [21]4 years ago
8 0
3.2(2.3) - 4.8

Simplify.

(3.2 × 2.3) - 4.8

Simplify.

(10.24) - 4.8

Simplify.

5.44

~Hope I helped!~
Aleksandr-060686 [28]4 years ago
5 0
The answer is 2.56
3.2 (2.3)=7.36
7.36-4.8=2.56
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Problem 22
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8x^4+4x^3-20x^2 - x^4-5x^3+3x + 17
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So the final simplified answer to problem 22 is
7x^4-x^3-20x^2+3x + 17

--------------------------------

Problem 23
-2x(x^3-6x^2+6)+4x^3-(5x^4+10x)
-2x(x^3)-2x(-6x^2)-2x(6)+4x^3-(5x^4)-(10x)
-2x^4+12x^3-12x+4x^3-5x^4-10x
-7x^4+16x^3-22x

So problem 23 simplifies to
-7x^4+16x^3-22x

---------------------------------------------------------

Problem 24
4b[2a^2-5(3ab-2b^2)]+29ab^2
4b[2a^2-5(3ab)-5(-2b^2)]+29ab^2
4b[2a^2-15ab+10b^2]+29ab^2
4b[2a^2]+4b[-15ab]+4b[10b^2]+29ab^2
8a^2b-60ab^2+40b^3+29ab^2
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So problem 24 simplifies to 
8a^2b-31ab^2+40b^3

-------------------------------------------------

Problem 25
2y(6x-4x^2y)+13x^2y^2-6
2y(6x)+2y(-4x^2y)+13x^2y^2-6
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12xy+5x^2y^2-6

The final answer for problem 25 is
12xy+5x^2y^2-6
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