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irga5000 [103]
3 years ago
6

Which expression is equal to (−4x2−1)(2x2+3)?

Mathematics
2 answers:
Leya [2.2K]3 years ago
7 0

Answer:

The first one:

−8x4−14x2−3

Step-by-step explanation:

(-4•2-1)(2•2+3)

-4•2 = -8

-8 - 1 = -9

(-9)(2•2+3)

2•2 = 4

4+3 = 7

(-9)(7) = -63

Now we find the one that equals -63:

-8•4-14•2-3

(-8•4)-14•2-3

-32-14•2-3

-32-(14•2)-3

-32-28-3

(-32-28)-3

-60-3

-60-3 = -63

BAM! THE ANSWER!

soldi70 [24.7K]3 years ago
3 0

Answer:

The firs one is the right one

Step-by-step explanation:

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You randomly choose one of the tiles. Without replacing the first tile, you randomly choose a second tile. Find the probability
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I got the first probability and the second probabilty then multiplied them together.

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Cheng-Yu has been recording data based on her age and height, which can be seen in the scatter plot shown. Predict Cheng-Yu's he
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Read 2 more answers
What is the inequality for -8x>48
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Step-by-step explanation:

6 0
3 years ago
8.6 x10^-9 in standard form
katen-ka-za [31]

-9 in power means that the value is in fractional and the 10 base is multipied 9 times and put it on denominator.

8.6 = 86 x 10^-1

Let's multiply :

86 x 10^-1 x 10^-9

= 86 x 10^-10

= 86/10000000000

=0,0000000086

Note : if you don't know about how 10^-1 x 10^-9 returns 10^-10, it's because of exponential rules. If the base are same wuth each other, then just do the addition operation in the exponent like this :

10^(-1+(-9))

= 10^(-1-9)

=10^-10

Hope it helps :)

4 0
3 years ago
Find the distance between (-2,2) and (3,-1)
hichkok12 [17]

Answer:

√34 or 5.83095189485

Step-by-step explanation:

√(3+2)^2 + (-1-2)^2

√(5^2 +-3^2)

√(25 +9)

√34

7 0
3 years ago
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