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Alex73 [517]
2 years ago
10

Which is the first step in simplifying 4(3x-2)+6x(2-1)

Mathematics
2 answers:
elena-14-01-66 [18.8K]2 years ago
8 0

Answer:

The first step in simplifying this expression is to evaluate the terms within the parenthesis - starting with the multiplication and following the rules for operations in math.

NISA [10]2 years ago
3 0

Answer:

Expanding brackets

Step-by-step explanation:

4(3x)+4(-2)+6x(2)+6x(-1)

12x - 8 + 12x - 6x

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8 0
3 years ago
What times what equals 30 but add to get 40?
musickatia [10]
Lets call those two unknown numbers a, b and write the info in the problem as equations:
a*b = 30
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lets solve for a in the second equation and substitute in the first:
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therefore:
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40b - b^2 = 30
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if we apply the general quadratic equation to solve we have:
b = (40 +- √(1600 - 120))/2
b = (40 +- √(1480<span>))/2
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There are two solutions:
<span>b1 = (40 + 38.47)/2
</span><span>b1 = 39.24
b2 = (40 - 38.47)/2
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lets use the second solution <span>b2 = 0.765, and substitute in the first equation to find a:
</span><span>a*b = 30
</span>a*0.765 = 30
a = 30/0.765
a = 39.216
so the numbers are 39.216 and 0.765
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